In a reef tank, the flow of water is essential for the corals and fish that are used to waves and currents in the oceans.
To provide you with adequate recommendations for reef aquariums I would require from the best saltwater powerhead for your particular setup to be able to convincingly mimic the water flows of the ocean.
There are factors to consider as you choose the right unit for your reef setup. The type of your saltwater fish should come into play. A too powerful aquarium powerhead may not favor a saltwater fish that is not comfortable in turbulent waters.
The dimensions and size of your aquarium also play a role in your choice. You’ll need considerably stronger aquarium powerheads for a 75-gallon fish tank than for a 40-gallon one, for example. Also, is there a good small unit that would best fit a nano fish tank?
It is also crucial that you place the powerhead in a position that enables it to maximize its efficiency. So should you take for granted how to properly position yours to achieve the optimal placement so that the flow can satisfy all marine inhabitants?
Anyway, I first want to offer a list of pointers to help you with selecting the best powerheads that you can possibly get for your saltwater reef aquarium.
Let’s get to it straight away.
If you are in a hurry you can simply check the overview table with the reviewed products below:
|Powerhead Name||GPH Rating||Price Bracket|
|1. Hydor Koralia Nano||240 to 565 GPH||$$|
|2. Hydor Koralia Evolution||550 to 1500 GPH||$$|
|3. SunSun JVP Series||530 to 800 GPH||$|
|4. Jebao Cross Flow CP||2700 to 7500 GPH with only one unit required||$$$|
|5. Ecotech MP40W QD||up to 4500+ GPH||$$$$|
A Buyer’s Guide to Powerheads and Their Role in a Coral Reef Tank
Not every type of aquarium powerhead you lay your hands on would be fit for your fish tank. If you do not know what you want, then anything goes, and you could end up with the wrong product that turns your setup into a mess. That being said, here are the complete guidelines, on choosing aquarium powerheads for a reef tank:
1. It Should Fit in and Not Spoil Aesthetics
The size of your fish tank should be able to accommodate your chosen powerhead. Here is what to consider when it comes to the powerhead’s size:
The best approach would be to employ something like the EcoTech Marine Vortech powerheads with magnetic suction cups and an outside cord which are known to save space and provide a clean interior.
2. Choosing the Right GPH Rate
Whether it is big or small, the powerhead should be powerful enough to have an impact in the fish tank as far as water flow is concerned. Here is what to have an eye on when it comes to a powerhead’s pumping capacity:
A powerhead’s strength is measured by how many gallons of water it circulates in the aquarium per hour – that is, Gallons per Hour or GPH. In reef tanks, the GPH capacity of the powerheads depends on the type of coral you keep in combination with the aquarium’s size. For keeping LPS coral reef aquariums you’re looking at around 20 times of the total tank volume to be turned per hour. For an SPS-dominated reef tank, the hourly water turnover should go up to 40 times.
A quick example would be that if yours were a 55-gallon reef aquarium it would require powerheads with a total pumping capacity of between 1100 and 2200 GPH.
If you were to keep mainly LPS and soft corals in that tank then you’d need to aim for 1100 GPH with the powerheads because 55 x 20 = 1000.
If there were lots of SPS corals in that same 55-gallon tank then it would need an internal flow rate of 2200 GPH because 55 x 40 = 2200.
Another thing to know when choosing the GPH rating of the aquarium powerhead is flow rate distribution between multiple units.
If your fish tank requires a total of 2000 GPH, then it would be smart to actually buy 2 separate powerheads rated at 1000 GPH each.
This is because, it’s generally better to position 2 smaller powerheads at each end of the tank, in order to eliminate the possibility of stagnant water spots.
I have a separate section below specifically discussing powerhead placement, which will make things clear when you reach it.
3. Additional Features That Provide Convenience
While any other powerhead can perform its water circulation duty, how each model is designed determines how efficient it can be.
Some come with special features or kits to enhance said efficiency.
New models with improvements keep coming up the more technology advances.
So here is what to look out for in features when buying a more efficient powerhead:
There are aquarium powerheads fitted with switches to adjust the water flow rate and speed. Still, more advanced ones are wireless and have remote control pads. With these, you can select different modes depending on what you aim to achieve at any given moment.
4. Heat Generation is Not To Be Overlooked
Excess heat in your tank could raise the temperature, which in turn could affect the well-being of the most heat-sensitive of your reef aquarium inhabitants. So this is what you should also watch out for in a powerhead concerning heat emission:
On the other hand, note that a unit whose strainer holes are small can easily clog. The clog slows the water intake, forcing the device to overwork.
5. Durability and Build Quality for Long-Term Use
How long is your powerhead going to last? Here is what to check out in terms of quality and durability:
An aquarium powerhead is one product that operates under high pressure, literally in “unchartered waters”. It generates heat and pressure and is submerged most of the time. It should be sturdy enough to withstand its own vibration and the waves from other devices like the filter.
The material it is made of should, therefore, concern you.
The electric cords should be dependable, never wearing out soon.
You do not want stray electrical voltage to one day leak into the aquarium water and electro-shock your fish or even you, so the overall quality of the powerhead is crucial.
There have been cases of fish electrocution due to leaking voltage, to be honest.
6. Energy Efficiency on a Device That’s Constantly Working
Energy consumption is another factor you should not ignore. Here is what to consider when it comes to energy efficiency:
7. Ease of Maintenance
Here is what to consider when it comes to ease of installation and maintenance of an aquarium powerhead:
You should choose a powerhead that you can easily install by following the manual. The manual should be clear enough, with no ambiguities.
Again, taking it apart and assembling it should also be simple so that you can clean it and take it back whenever you do regular maintenance.
Talking of routine maintenance, for a powerhead, this should be like once every two months to avoid clogging.
8. Noise Pollution
Powerheads are generally low-noise devices. The noise they make is insignificant, considering they are mostly submerged.
However, the unfortunate truth is, some make the kind of noise you may not be able to tolerate.
I speak from personal experience, by the way. When you have your fish tank in the sitting-room, the sound could be bothersome if you end up with a noisy device.
So here is what you should consider when it comes to sound as you buy a powerhead:
You should ensure you acquire only the silent models if you are concerned about the noise.
What’s The Best Powerhead For A Natural Reef Aquarium?
With all that said, I am going to review some units, so that you can choose the best one and be sure that your aquarium powerhead of choice satisfies the flow requirements of your corals.
I will only mention products that I like and I have used, or some reliable fellow aquarist I know has used and recommended to me.
That said, have a look at the 5 best aquarium powerheads for a reef tank:
1. Hydor Koralia Nano – Best for Small Reef Tanks
One good thing I have to put in from the onset, with no strings attached, for the Hydor company is that should you at some point order a replacement part, they ship it to you for free.
Anyway, the Hydor Koralia Nano Aquarium Circulation Pump comes in different models so that you can choose the one that perfectly suits your fish tank’s gallon size and livestock.
They are all reliable, impressive, well-built, easy to use and a it’s a breeze to position them.
The combination of durability and convenience is remarkable given the affordable price tag.
These units are arguably the best when it comes to providing flow in a nano aquarium as the smaller Hydor Koralia powerheads are specially designed for just that.
For positioning, they come with a magnet that you place on the outside of the fish tank to hold the suction cup securely in place.
This feature helps with placing the unit virtually anywhere on the aquarium’s glass.
The cords come with a protector just in case you have the kind of fish tank inhabitants that like to chew on whatever is in sight.
The impeller might look small, but it sure moves the waters around as if it’s turbo-charged.
One of the better features of this powerhead is that it is also quite easy to clean.
This is very important for some reef keepers who don’t like to spend a lot of their time performing aquarium maintenance duties.
Anyway, I give this new Koralia version thumbs up as far as energy consumption is concerned. It has been improved to be efficiently providing a very reasonable ratio of cents for electricity per GPH.
With all said, this is one of the best nano powerheads I can confidently recommend for a small saltwater aquarium.
Check my recommendation section to see which exact model will fit the gallon capacity of your reef tank.Advantages:
- It comes in different sizes, giving you a number of options to choose from.
- It is energy efficient.
- The magnet makes keeping it in place a no-brainer.
- It is sturdy, and so withstands the internal pressure.
- Good quality build given the price tag
- Low long-term maintenance
- Timer compatible
- At times, it goes wonky, adding to the noise from your fish tank. As I said, making good use of the magnet can help eliminate the rattling sound.
2. Hydor Koralia Evolution – Good Circulation in Medium Reef Aquariums
If used correctly, this compact powerhead moves aquarium water around perfectly, giving no room for stagnant spots.
I’d like to stress on ‘correctly’ because some users place it in positions that are anything but well-thought (to put it mildly), and the results could be that the jet streams directly onto the sand, causing mayhem.
Anyway, with the Hydor Koralia Evolution we are looking at a circulation pump that is powerful, can be set on a timer, and is rather durable in the long run.
On top of that, the product is rather cheap by the reef keeping standards of sometimes overpriced equipment, which I highly appreciated when I initially tested this in my reef tank.
This powerhead also came in handy when I added salt into my saltwater fish tank which should usually be thoroughly and quickly mixed.
I guess this makes the Hydor Koralia Evolution one of the best powerheads for a saltwater reef aquarium.
Aside from the good overall GPH potential, I like this unit most when it comes to energy consumption as it takes in only about 5 watts.
By using low electricity, it also discharges little heat, meaning it won’t overheat your reef fish tank.
The suction cup and the exterior magnet also ensure the powerhead itself never falls due to its own vibrations.
With everything held constant, the Hydor Koralia Evolution Aquarium Circulation Pump is usually quiet enough.
A drawback worth pointing out is that these powerheads have no flow control switch, but you can always change the flow direction.
However, for the affordable price in combination with the strong GPH capability, I think this is a fair trade.
Anyway, my observations show that Hydor does make overall good quality powerheads that would best suit a marine tank without breaking the bank.Advantages:
- t’s an energy saver.
- It’s powerful given the price bracket
- The exterior magnet ensures it remains on its position.
- The fish guard is firmly held, plus the holes on the guard are too small to suck in your nano fish
- Long-lasting compared to other circulation pumps with this price
- Pretty affordable for what it provides
- Will work on a timer
- It gets noisy at times if the magnetic suction cup is not carefully adjusted, which takes a bit of tweaking
- It has no flow-control dial.
3. SUNSUN JVP Series Submersible Powerhead – Best for a Cheap Temporary Solution
The SUNSUN JVP Series Submersible Circulation Powerhead Pump is one cheap unit you should go for if you are on a really tight budget.
But as you know, cheap products come with certain limitations.
I think this is one fact that many reviewers pretend to forget when they write their very negative views about a product.
Your experience with the product should be reviewed against its price.
If you bought it cheaply but complain when it can’t last more than four years, I honestly think you are not being fair to the product, the manufacturer, and to the potential buyers who get misled by your review.
With that in mind, I want to say that SUNSUN JVP Series Submersible Pumps perfectly offer the primary functions of any other powerhead: providing strong water circulation to stir up waste, speeding up the filtration and oxygenation processes, and keeping your fish active.
It is not completely quiet and you will have to spend a little more to get silent aquarium powerheads.
But the sound is not as loud as to wake you up from your sleep.
If anything, I would describe it as a slight humming noise.
There is also no flow control switch — something that is not a big deal for some people, including me if I buy a product this cheaply.
You also can only turn the powerhead off by unplugging and there’s no shortcut around that.
I have also noticed that the cord is rather short, meaning you may need to attach it to an extension cord to get to your power.
Anyway, this powerhead is flexible, so you can easily adjust its ball joint to rotate to the direction you see dead spots.
The suction cup is also reliable in holding the unit, as long as it lasts.
Another positive thing I can add is that this unit is relatively small and takes little space in a tank, which is deeply appreciated by reef keepers who do not want to spoil the internal aesthetics of their saltwater aquarium.
Remember how you position the powerheads in your reef tank determines their efficiency, so don’t place them where they will clog easily, causing them to overheat and then malfunction.
Anyway, my opinion is that it is best you buy the SUNSUN JVP Series Circulation PumpI if you require a really cheap nano powerhead for your saltwater tank.Advantages:
- You can’t beat the price.
- The ideal purchase for a super tight budget.
- It is comparatively small, and so is not going to eat much into your fish tank’s space.
- It submerges without issues.
- Its head nozzle is flexible.
- It is compatible with both the marine and saltwater tanks.
- The short cord is a tall order for some people.
- It lacks a suitable flow control.
- Should be looked at as a short-term investment, but is still a great purchase for a very tight budget.
4. Jebao Cross Flow CP – Unobtrusive, Strong and Silent
The Jebao Cross Flow Wave Maker is not like the other products listed here.
It’s a gyre type of a wave-making powerhead, which means that it is designed in a way to circulate the water back to itself.
With other non-gyre powerheads, you’ll need at least two units positioned at the opposing sides of the reef tank to eliminate dead spots.
With this type of wave maker, however, you only need one device and it will be enough to circulate the water in the whole saltwater aquarium, which leaves no stagnant water areas.
With this out of the way, I think it’s safe to say that the Jebao Cross Flow models listed here look deceptively modest.
However, you will be pleasantly surprised at the actual pumping power they can maintain.
These are no nano powerheads and they will definitely serve a large saltwater fish tank best.
Make sure you check my detailed suggestions below the review section for guidance on the exact CP model for your setup.
There I will make a recommendation based on reef tank size and point out where these would fit without demolishing your corals.
Anyway, the Jebao CP Series come with all the qualities one may need from a high-end aquarium powerhead.
They provide a dead silent experience, on top of enormous circulating power, that can be micromanaged through a multi-mode controller device.
The pump also seems to be extremely durable and requires cleaning roughly once a year.
The price is more than adequate for the provided quality and you can definitely view it as a long-term, low-maintenance investment.
Another thing that makes me love these units is their sleek and unobtrusive design.
They don’t look like your typical ostrich egg glued to the aquarium’s wall.
In my opinion, they make zero impact on the internal look of a reef tank, which is something I personally appreciate.
It’s worth noting that some users do report a short lifespan, however, based on my experience that is the result of either a poor shipping or human error.Advantages:
- It’s a powerhouse and it moves tons of water.
- Dead silent operation.
- Adjustable flow rate.
- Multiple modes, including a livestock feeding one.
- It comes with all the essential accessories.
- Sleek unobtrusive design that doesn’t hinder internal aquarium aesthetics.
- Gyre type powerhead, which means you don’t need multiple units to eliminate stagnant water spots.
- Durable, despite being sold in the lower price range.
- It discharges no heat.
- The power supply is not of high quality.
- The buttons on the controller can at times be problematic, but you can always ask for a replacement.
5. Ecotech Marine MP40wQD Smart WaveMaker – Premium High-End Circulation
If you are looking for the best tech-savvy powerhead for your saltwater aquarium, try the MP40wQD Vortech.
We aquarists have not been left out of the global digital train.
If you have an Apex controller, you are already halfway with this revolutionary powerhead.
You can safely control the unit(s) from there, put them on a timer and leave them to do their wonders.
The Ecotech Marine MP40W QD Wireless Quiet Drive Smart WaveMaker is simply wireless. But what does that mean? It means you remotely control the wave patterns.
How remotely? Well, you can set the wave schedule via the website or a mobile app regardless of where you are.
It means no wires or extension cords in the aquarium.
In short, there are no risks related to mild electrical discharge that causes electrical shock. Or, in the worst-case scenario, electrocution.
Wireless also means there are no obstacles in your aquarium to block your view.
One innovative feature I love in this model is that all the cords remain outside of the fish tank.
Only the actual impeller is inside, being held by a magnetic suction cup that remains outside on the glass.
The saltwater tank is clearer because most of the powerhead components are outside.
You can, therefore, see your fish and reef corals in their full glory.
If like me, you do not want excess devices in the aquarium, the more reason this is the best powerhead you should get for your reef tank.
Your tank temperature will also remain stable since less heat-generating electrical devices in the water tend to lower the temperature.
A wireless powerhead like this one is also easier to install or clean.
In terms of appearance, it has a sleek look that you will no doubt love.
About the powerhead’s working: it is amazingly the quietest of all the powerheads I have reviewed here except, perhaps, the Cross Flow Jebao.
Its output volume is high in spite of its quietness.
It can pump more than 4,500 gallons per hour while maintaining low power consumption.
You can easily adjust the flow and GPH rate too, which makes this purchase a no-brainer if you’ve got the budget.
Ecotech (an American company that has been around for years) keeps on coming up with improvements.
There used to be MP40 QD models that had some issues with cracking magnets and rusting, but they have since corrected these.
So do not rely on the older online reviews because we are now discussing the latest versions.
As things stand now, their powerheads are the best water movers your aquarium deserves.
Meanwhile, Ecotech has warm, super-supportive customer care. Then there is the one-year warranty, as a guarantee, they sell you reliable products.
I don’t hold brief for them, but I always get nothing short of exceptional service from them.Advantages:
- It is super silent.
- Everything is customizable, including wave-pattern modes.
- It’s safe; no room for accidental electrical discharges in the aquarium.
- No hardware in the tank to congest the fish tank or distract your view.
- It is easy to install and maintain.
- It is classy and trendy.
- Stylish design.
- Customer feedback is acted upon swiftly.
- It is an excellent power-saver.
- Its turnover volume is high per hour.
- A highly reputed company makes it.
- It never raises the water temperature, being wireless.
- It is pricey. Once you have taken a deep breath and leaped across its price, you have nothing else to worry about.
What’s The Best Pick For The Fish Tank’s Gallon Size?
Maybe up to this point you are not quite sure which exact powerhead you should get for your particular reef tank’s size. Therefore, to go a step further, I am cutting out more fat to make the meat leaner for you by outlining a given aquarium size versus the right powerhead.
1. Top Powerheads for a 10 Gallon Nano Tank
So here is the best powerhead for a 10-gallon nano reef tank:
Your 10-gallon nano reef tank would need between 20 and 40 times of water turnover, depending on the coral you keep.
For an aquarium with mainly LPS corals, you should go for one unit of Hydor Koralia Nano Aquarium Circulation Pump 240 GPH. This amounts to a total of 24 times of water turnover, which for LPS corals is just about right. These units are one of the best small powerheads available for this kind of setup.
For an SPS-dominant nano reef tank, the same applies, but you’re looking to turn the total water volume up to 40 times per hour. Two units of Hydor Koralia Nano 240 GPH should do the job perfectly, keeping your SPS corals satisfied.
By getting to 480 GPH in total coming from 2 units, you will have an even flow throughout your SPS-dominate 10-gallon reef tank.
If, and only if, you don’t plan to put too much live rock in there, you can get a single Hydor Koralia rated at 425 GPH. This way, you won’t get stagnant water spots even though the flow is coming from a single source.
2. Top Powerheads for 20 to 30 Gallon Tanks
Here are the best powerheads for 20 and 30-gallon reef tanks:
For a 20-30 gallon coral reef aquarium, you’d need a water turnover ranging from 400 to 1200 GPH depending on your livestock. This is following the tule that LPS corals need 20x total volume turnover, where SPS corals prefer it at a 40x multiple.
If you keep an LPS dominated reef tank that has a total water volume of 20 gallons, you can go for one unit of Hydor Koralia Nano 425 GPH or two units of Hydor Koralia Nano Aquarium Circulation Pump 240 GPH, depending on how you want to distribute the flow.
If you want it to be more evenly distributed you should use the 2 units, but if you don’t have much rockwork to block the current you can go with the stronger single powerhead.
For a larger nano reef tank of 30 gallons, that revolves around LPS corals your best bet would be to buy two Hydor Koralia Nano powerheads, rated at 240 GPH.
In the case of an SPS-dominate nano reef aquarium, you’ll need a maximum of 1,200 GPH water turnover, assuming the tank has a 30-gallon capacity.
Two units of Hydor Koralia Evolution (550 to 600 GPH) are what I consider the best powerhead recommendation here.
However, if you are on a budget, you can instead have two units of SUNSUN JVP Series Submersible 530 GPH, which are comparatively a lot cheaper.
For a 20-gallon aquarium that houses mainly SPS corals, you can definitely get away with 2x Hydor Koralia Nano, rated at 425 GPH.
3. Top Powerheads for a 40 Gallon Tank
Have a peek at the best powerheads for 40-gallon reef tank:
The best powerhead for a 40-gallon reef aquarium should be able to pump at least 800 GPH if it houses mainly LPS coral reefs. A pair of Hydor Koralia Nano (425 GPH) is the best option you can get without breaking the bank.
If it is a 40-gallon SPS coral tank, you should purchase two units of SUNSUN JVP Series Powerhead Pump 800 GPH. These two amount to 1600 GPH which satisfies the rule of 40x total aquarium water turnover.
If you can afford to spend more, go for 2x Hydor Koralia Evolution, rated at between 750 and 850 gallons per hour (visit the link to Amazon to see the exact model).
4. Top Powerheads for a 55 Gallon Tank
Here is how to equip a 55-gallon reef tank with the best powerhead options:
A 55-gallon reef tank needs at least 20 times of water turnover for LPS corals and 40 times for SPS ones.
For a reef aquarium that houses predominantly LPS corals, an ideal turnover is 1100 GPH, for which two units of Hydor Koralia Nano 565 GPH is a good match.
It is also on the cheaper side.
Alternatively, you can go for two lower-quality units of SUNSUN JVP Series and get a pack of 2 units rated at 530 GPH, which will be almost 5 times less the cost. The latter is best if you’re on a very tight budget, but want to get your LPS aquarium rolling sooner rather than later.
An SPS reef aquarium that has a total water volume of 55 gallons would require 40 times of water turnover which equals 2200 GPH.
If you should be on a budget, get for yourself two units of Hydor Koralia Evolution rated at 1050-1150 GPH. They are one of the best powerheads that are recommended for a reef tank of this size, in my experience. If you want to go super low on the budget you can just get 3x SUNSUN JVP Series that will amount to about 2400 GPH in total, with each being 800 GPH.
5. Top powerheads for a 75-gallon tank
Here are the powerheads that would work best in a 75-gallon reef tank:
A 75-gallon reef tank will require a turnover of between 1500 and 3000 GPH, depending on what kind of coral you keep in there.
For a reef tank with mostly LPS coral species, a pair of SUNSUN JVP Series Submersible 800 GPH is ideal and on the cheaper side. You can as well go for 2x of Hydor Koralia Evolution 750 to 850 GPH if you wish to be more generous to your aquarium. The Koralia is probably the best powerhead option for this setup if you don’t want to break the bank, without compromising with the quality.
As for the mighty 75-gallon reef tank dominated by SPS corals, you’ll want a water turnover of at least 40 times so that the corals feel comfortable. In that case, you should opt for 2 powerheads of the Hydor Koralia Evolution rated at 1500 GPH each, which is on the cheaper side.
On the other hand, you can take advantage of the Cross Flow system of Jebao and get their CP-90 model. It stands better inside of the aquarium and is not as obtrusive to the reef’s internal aesthetics. The CP-90 assumes a flow rate of between 2700 and 3300 GPH for the whole tank with a single unit. With these, you don’t need to get multiple ones to eliminate stagnant water spots. It has a controllable flow rate, so tune it down to 50%, which should be enough for this setup.
Alternatively, if you have the budget means, I will definitely recommend getting 2x EcoTech Marine Vortech MP40wQD. This is one of the best powerheads in the high-end bracket and it has many advantages over the other recommendations. It’s pricey, but you can see my review to check why.
The point being is that it’s totally worth it if your budget is not limited and you’re serious about keeping a 75-gallon SPS-dominate reef tank.
6. Top Powerheads for a 90 Gallon Tank
To get the best powerheads for a 90-gallon reef tank you can try:
The best powered for a 90-gallon reef aquarium should be capable of at least 900 GPH per unit. If the reef tank mainly has LPS corals, then the right powerheads should pump a total of 1800 GPH.
Two units of Hydor Koralia Evolution Aquarium Circulation Pump (1050-1150 GPH) can comfortably deliver that without overpowering the corals.
For an SPS type of reef tank that has a 90-gallon water capacity, the required turnover rises to 3600 GPH. SPS coral species enjoy a stronger flow or at least 40 times of water turnover per hour.
In that case, I’d recommend 2x Vortech MP40wQD, but make sure to lower their pumping capacity to half. Both of these are rated at 4500 GPH when going with full power, so reducing them to about 1/2 will net you around 4000 GPH of evenly distributed flow in total.
If you can’t afford the MP40wQD then I recommend getting a single gyre-type Jebao Cross Flow CP-90, rated at a total flow of between 2700 and 3300 GPH. Ramp up the settings to reach the maximum and your SPS corals will feel absolutely fantastic in your 90-gallon reef tank. By opting for a Jebao you’ll pay as much as 8 times less than for the Vortech. The good thing about the Jebao Cross Flow models is that you only need a single unit to circulate the whole tank’s volume.
7. Top Powerheads for a 125-Gallon Tank
Here is how to choose the best powerheads for a 125-gallon coral reef tank:
A 125-gallon reef aquarium is obviously going to need very strong powerheads. The rule for healthy flow for LPS corals states that they would need 20x of the total tank’s volume in water turnover. In an LPS-dominate 125 gallon reef tank, we are talking about 2500 GPH.
The best approach here would be to use 2 units of Hydor Koralia Evolution rated at almost 1200 GPH each if you are looking for some cheap ones. Supplement that with a third Hydor Koralia Nano 425 GPH powerhead and you’ll hit the minimum requirements of LPS corals on a budget.
Alternatively, you can go for a single Jebao Cross Flow CP-90 powerhead with a gyre circulation which will cost even less than the Koralia units. It would be best if you tune down the Jebao to the minimum, which will net you around 2700 GPH in total.
As for a 125-gallon SPS reef tank, which requires 5000 GPH of total water turnover, you should take a single Jebao Cross Flow CP-120 powerhead if you want to spend less.
The estimated flow rate of this gyre type of unit is between 4300 and 4600 GPH, which is your best option when you don’t want to spend a fortune.
Tune the Jebao at maximum power and leave it be.
However, if you are ready to pay more for the most efficient powerhead amongst those I have listed here, then go for a pair of Ecotech Marine MP40W QD Wireless Quiet Drive Smart WaveMaker.
Its wireless controller and other unique features make it the best powerhead you can currently get for a 125-gallon reef aquarium dominated by SPS corals.
The estimated flow rate of each MP40wQD is 4500 GPH when they work at their maximum pumping capacity, so you’d need to tune down each separate unit to slightly above half the power. This way you’ll get around 2500 GPH per powerhead which is an optimal water turnover for a 125-gallon reef aquarium that houses mainly SPS corals.
What’s The Best Placement For Your Powerhead?
At times, the powerhead fails to perform efficiently, not because it is ineffective, but because you have not placed it correctly.
Therefore, no matter how expensive or powerful it is, you need to learn the art of optimal positioning.
However, there is no universally agreed position for aquarium powerheads.
Each reef tank has its unique requirements, so the placement of the current-generating unit is mainly dictated by rockwork and coral placement.
Here is what to bear in mind when it comes to proper powerhead placement:
Ideally, you’d want to use 2 separate powerheads placed at the opposing ends of the aquarium. The best way to position an aquarium powerhead is usually near the water surface, where the currents can generate partial surface agitation and prevent sand from flying around. The agitation helps to break down accumulating protein films, improves the internal shimmering effect and also helps with oxygenation. When placing the powerheads mind that you should point them in opposite directions, in order to eliminate stagnant water spots in the aquarium. A good way to do that is by pointing one to the bottom-left and the other to the middle-right section of the water column. That’s assuming you’re standing behind each device on each side of the aquarium when directing the currents.
The filter in the tank also determines how you place the powerhead.
Since the filter also generates currents, it is better to put the powerhead far away from the area being stirred by the filter’s water flow.
It is now between you and your saltwater aquarium, but may this article help you make changes that are going to cause your fish, coral reefs to enjoy a natural environment.
In my view, placing a suitable powerhead is one of the best decisions you can make for the general well-being of your reef tank.
As you may have also realized in the reviews, no matter how good a product is, there is always something negative about it. So just go ahead and buy what you believe is right for you based on the information you already have.
Drop me a comment below if you feel like sharing your experience with either of these units.