AquaClear 20 Power Filter, Fish Tank Filter for 5- to 20-Gallon Aquariums
Original price was: $38.99.$35.99Current price is: $35.99.
Price: $38.99 - $35.99
(as of Nov 09, 2025 13:40:16 UTC – Details)
The Fluval 20 Power Filter is designed to keep aquariums between 5 and 20 gallons clean, clear, and healthy. With a powerful 3-stage filtration system, it delivers mechanical, chemical, and biological filtration to remove toxins, debris, odors, and discoloration. Outfitted with Fluval Foam, Activated Carbon, BioMax, and Cycle Guard, this filter ensures superior water quality and long-term stability. Its energy-efficient, whisper-quiet pump reduces operating costs while providing up to 7 times more filtration volume than comparable filters. Quick to install and simple to maintain, the Fluval 20 Power Filter is perfect for aquarists who want reliable, high-performance filtration in a compact design.
Is Discontinued By Manufacturer : No
Product Dimensions : 4.5 x 7 x 6.5 inches; 1.4 Pounds
Item model number : A595
Department : Unisex-Adult
Date First Available : June 20, 2004
Manufacturer : Rolf C. Hagen (USA) Corp.
ASIN : B000260FVG
Best Sellers Rank: #17,752 in Pet Supplies (See Top 100 in Pet Supplies) #62 in Aquarium Filters
Customer Reviews: 4.3 4.3 out of 5 stars 7,280 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Aquarium filtration system that offers superior contact time with filter media and energy efficient pump lowers operating costs
Quick and easy installation; we recommend that you clean aquarium filter every 2 weeks for maximum operation and efficiency
Provides optimal mechanical; chemical; and biological filtration
Comes equipped with AquaClear Foam; Activated Carbon Filter and BioMax and Cycle Guard for superior water quality
Filtration volume is up to 7 times larger than comparable fish tank filters
Customers say
Customers find the aquarium filter works well, particularly for 10-gallon tanks, and appreciate its build quality and value for money as a cheaper replacement option. The filter keeps tanks clean and clear, with water remaining crystal clear for months, and one customer notes it effectively clears green water. While some customers find it super quiet, others say it’s pretty noisy. The durability receives mixed reviews, with several customers reporting it broke after 1.5 months of use.
8 reviews for AquaClear 20 Power Filter, Fish Tank Filter for 5- to 20-Gallon Aquariums
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Original price was: $38.99.$35.99Current price is: $35.99.
Hi –
Cleans the water really well
I have a 10 gallon aquarium that used to have an old tetra filter. It worked great and we have had it for a while now. But recently it started to slow down and after several cleanings it still wouldn’t work at full speed. I though about replacing the prop or the entire motor but read up on different filters and found aquaclear.The main selling point, beside positive reviews, was the efficiency and low cost to maintain.There was a lot of debris floating around in the tank since I haven’t had a filter running at full speed in a month or so. After I set this filter up and placed it in the tank with a couple hours or so I checked it out and the water was crystal clear. I had to rinse out the sponge from how much stuff it collected since there was a lot floating around, After placing it back in again and after another hour or so the water is pretty much spotless.So far it’s a great filter and super quiet. I can’t hear it running at all. The on thing this has an upper hand on compared to tetra is the quietness. Tetra’s, when brand new are very quiet but these are silent. Maybe time will be a difference but it seems like a great quality filter.Also, it should be noted that some say tetra’s are more expensive to run. This is not true. If you rinse out the filter cartridge and replace the carbon with the bulk carbon tubs you can buy it is cheaper than replacing the entire cartridge. This one may be a tad cheaper since the sponge will almost never need replacing, but tetra’s are very cheap also. Aquaclear just beat’s it out on quietness and I like the setup from sponge to carbo to bio more.
C L Hinds –
Best HOB filter around!
I picked up the AC20 for my 10G tank and my initial impression is that I’m pretty impressed with this filter. It ordered the AC because so many people recommended it to me stating that it was a very versatile HOB filter. I was skeptical, but I must say, they were right.The flow rate seems to be pretty accreted to the manufacturer’s description. I ordered the AC20 for my 10G tank because it was rated at 100GPH thus giving me a 10x turnover rate. I was worried it would look odd on the 10G tank due its size, but it fits it quite nicely. Its actually smaller than I expected.I like the filter media setup on this unit. There is a three sided basket-type insert with rings on the top to grab pull it out of the filter. You simply fill the basket with media and drop it into the filter. It uses a sponge for mechanical filtration, ceramic rings for biological and carbon for chemical. I don’t use chemical filtration on my tanks unless its needed so i left the carbon out of the filter bag and just used the ceramic rings. The sponge sits on the bottom and the rings are on top of that. This is a very versatile setup that would allow you to put whatever type of media in the filter you’d like as long as it fits.The AC20 is a little smaller than I’d like, but it works. The AC30 would probably be the perfect size for a 10G tank. I’ve seen people use an AC70 on a 10G tank so I’m sure a 30 would fit. I only have a betta in my 10G tank so the 20 works just fine. If you have a lot of fish pick up the 30.I think this is the best HOB filter on the market. Its quiet-, efficient and versatile. My old filter died a week before i purchased this one and my tank was pretty murky and smelly. This filter cleaned it up in less than two days! Pretty impressive for a little HOB. I can’t speak to its longevity-I’ve heard good things-but I will give an update in a few months on the filter.
Kevin T. –
Used as replacement pump for AquaClear 50 and it works great! Fantastic price
Great filter, gets the job done! Note: it’s the same pump for larger AquaClear Power Filter models with a different size impeller!I received a used AquaClear 50 Power Filter from a friend when she was done with her aquarium so I decided to use it on one of my 38 gallon aquariums. It was more than enough filtration and water flow to keep the water clear. However, because it was about 2 years old, something in the pump was causing it to create a loud buzz/hum sound as the pump ran. I tried cleaning/lubricating the impeller and shaft multiple times, tried to flush out any sand/dirt, but nothing worked. Every time I plugged it in for use, it would still make that loud noise. After inspecting the magnet inside the pump, there were some scratches that may have caused some rubbing against the shaft. I looked into replacing it, but it ended up costing ~$15 where as a brand new AquaClear 20 costs $20.I took my chances that it was something with the pump. Knowing that the pump is the same for all the AquaClear filters (but the impeller sizes are different!!!) my plan was to buy this smaller one, and then switch out the shaft + impeller to see if the noise went away. And it did! Now I have a great, SILENT AquaClear 50 Power Filter, and can take the one I bought to use in a place where it being noisy doesn’t bother me.I’ll be happy to answer any questions with the procedure and include pictures if anyone asks me to.Overall, the new pump did the trick and solved my issue. And for the price, it is pretty hard to beat considering the good quality filtration that comes with it. I’m happy and would use these again.
L Pakkos –
I know this will do a good job as it has had good reviews. The only reason I give it 3 stars is because it isnât as quiet as most people say the impeller is a bit noisy but not that noisy to put you off buying. Iâm hoping with time it may settle. I have heard some people use fda approved grease and that seems to work, but Iâm going to leave it and see what happens. If so you might void your warranty.ive has an all pond and seemingly does the same job for less money. £38 for this is too much for what it is. Well designed but a bit noisy.
Dan –
Ottima pompa e filtro esterno compatto, è il modello utilizzato sui Fluval Edge della Askoll anche se sul coperchietto trasparente c’è la scritta Aquaclear a differenza di quella inclusa nell’acquario che ha la scritta Edge. L’ho preso per utilizzarlo sul 24 litri e va perfettamente. La pompa è silenziosa e efficiente. Sono inclusi il filtro meccanico in spugna, una bustina con il carbone e una con i cannolicchi ad alta efficienza per il filtro biologico. Consigliata per chi deve sostituirla sul Fluval Edge e per qualsiasi altra applicazione dove si cerca un filtro esterno a cascata compatto, facile da gestire e esteticamente gradevole.
ilev –
Ãrünün profesyonel Akvaryumcu bir arkadaÅımın 60*40*40 ölçülerindeki cama cam bir bitkili akvaryumunda gayet güzel bir filtreleme yaptıÄına bizzat tanık oldum. Biyolojik sünger yerine lav kırıÄı, Sera sporax, zeolit, seramik halka vb filtrasyon malzemeleri kullanmak kaydıyla yaklaÅık bu ebatlarda ve balık yükü fazla olmayan akvaryumlarda yeterli biyolojik filtrelemeyi yapacaÄı kanaatindeyim.
Maria –
Iâve been using this aquarium filtering system for a few weeks now, and Iâm genuinely impressed. It runs extremely quietlyâso much so that I had to check it twice to make sure it was on the first day I installed it! If youâre sensitive to noise or keeping your aquarium in a quiet space like a bedroom or office, this is a great choice.Performance-wise, itâs been flawless so far. The water stays crystal clear, and my fish seem happy and healthy. Installation was simple, and maintenance looks easy enough as well. Itâs compact but powerful, and fits perfectly into my tank setup without being an eyesore.Overall, I highly recommend this filter if you’re looking for something efficient, whisper-quiet, and reliable. Itâs exceeded my expectations!
Placeholder –
Thoroughly impressed by the quality of product. Packaging was beautiful and functioning makes it worth the money spent