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  • AquaClear 20 Power Filter - 110 V, UL Listed (Includes AquaClear 20 Carbon, AquaClear 20 Foam & AquaClear 20 BioMax)
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AquaClear 20 Power Filter - 110 V, UL Listed (Includes AquaClear 20 Carbon, AquaClear 20 Foam & AquaClear 20 BioMax)

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List Price: $44.99
Price: $28.25 & FREE Shipping on orders over $35. Details
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  • Refiltration system that offers superior contact time with filter media and energy efficient pump lowers operating costs
  • Quick and easy installation
  • Filtration volume is up to 7 times larger than comparable filters
  • Comes equipped with AquaClear Foam, Activated Carbon and BioMax and Cycle Guard for continuous biological filtration and superior water quality
  • 2 year warranty; Ideal for aquariums up to 20 gallons
15 new from $25.44 1 used from $25.77

Frequently Bought Together

AquaClear 20 Power Filter - 110 V, UL Listed (Includes AquaClear 20 Carbon, AquaClear 20 Foam & AquaClear 20 BioMax) + Aquaclear Activated Carbon Insert, 20-Gallon Aquariums, 3-Pack + Aquaclear 20-Gallon Foam Inserts, 3-Pack
Price for all three: $42.13

Buy the selected items together


Special Offers and Product Promotions

  • Buy Used and Save: Buy a Used "AquaClear 20 Power Filter - 110 V, UL Listed (Incl...” from Amazon Warehouse Deals and save 42% off the $44.99 list price. Product is eligible for Amazon's 30-day returns policy and Prime or FREE Shipping. See all Used offers from Amazon Warehouse Deals.

Product Details

  • Product Dimensions: 4.5 x 7 x 6.5 inches ; 1.4 pounds
  • Shipping Weight: 2 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B000260FVG
  • Item model number: A595
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (930 customer reviews)
  • Amazon Best Sellers Rank: #1,356 in Pet Supplies (See Top 100 in Pet Supplies)
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Product Description

The AquaClear 20 Power Filter provides mechanical, chemical and biological filtration through its multi-stage filtration system for aquariums up to 20 gallons, and filters 100 gallons per hour. AquaClear Power Filter media volume is up to 7 times larger than comparable filters. Its unique design filters aquarium water through a natural and silent waterfall. The patented flow control feature allows you to regulate the water intake and flow, allowing customized filter performance. The media basket prevents "water by-pass" around the filter media, maximizing filtration efficiency. The AquaClear Power filters include Cycle Guard with BioMax that preserves beneficial bacteria for aquarium inhabitants and maintains clear aquarium water. Filter comes complete with all media needed for a healthy aquarium. AquaClear delivers an entire line of media including Zeo-Carb and Ammonia Remover exclusively designed for the AquaClear Power Filter.


Customer Questions & Answers

Customer Reviews

Aquaclears are the best HOB filters in the market!
Leonel Ramirez
I will definitely buy another one of these when one of the other filters breaks down.
Penmaric
The filter works great, it has excellent flow and is very quiet.
Keith Nitsch

Most Helpful Customer Reviews

132 of 139 people found the following review helpful By J. Burke on September 28, 2008
Unlike other filters that force you to spend money on new filters pads every two weeks, spending a lot on money you didn't think you would have to, this filter does not require replacement filter pads. Instead, it has a block of foam that is used to trap the dirt in the water. Every two weeks, simple clean the foam in water by squeezing it a few times! Just do it in your water changing bucket with de-chlorinated water.

You can change the carbon filter whenever you choose to. In fact, it is not needed all that much. I have run my tanks without carbon for a month at a time, no big deal. If the water starts to look yellow or brown, it is time to change it and put in some fresh carbon.
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91 of 101 people found the following review helpful By M. Newman on February 15, 2011
There is so much to say about this filter, it's hard to know where to start.
I bought this filter to replace a very ineffective Marineland Pengiun HOB filter. I have a 20 gallon tank, but have a heavy bioload due to a dozen or so fish being born in our tank (thank you Petsmart). The issues we ran into with the Penguin filter were many (see my review), so I looked for a more powerful and configurable filter. The Aquaclear 70 fit the bill.
The housing has plastic walls that I think are a bit thin. I feel the need to be very careful with it when I take it apart and put it back together. That's about the only critical thing I have to say about this filter. It has a dial on the back to help keep the filter level. The impeller and motor can be easily replaced with a simple twist.
You get two intakes with this unit, so you can have it at mid-level, or extend it to get closer to the bottom. The intake swivels a bit, which causes a reduction in the water intake. This is a very useful feature, as it recycles some of the water already in the filter to mix with the water from the intake to give you extra clean water, just at a slower rate. This also comes in handy when you want to reduce the water disturbance for feeding.
The filter media included with the unit is exceptional. You get a filter sponge that catches the debris, a carbon "sock" to catch the very fine particles and chemicals, and "bio max" which is just a media to keep beneficial bacteria. The sponge can be rinsed and reused to your heart's content. It's very sturdy and seems to be effective. The carbon "sock" is huge! Although there is some debate among aquarists if you need continual carbon filtration or not, you certainly can get a lot of chemical filtration should you so desire.
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53 of 60 people found the following review helpful By L. Zuluaga on September 13, 2010
Verified Purchase
I bought my AquaClear 30 in early July. It was definitely quieter than the previous filter and seemed to do a better job keeping the tank clear. I've had it long enough to have cleaned it and, as filter cleaning goes, I find this design very user friendly. Then, yesterday, we had a power bounce and the filter didn't come back. After eliminating the outlet as a problem, I noticed the bottom of the unit was very warm. I unplugged it, let it cool, plugged it back in. Nothing. Today, I went to my nearest PetCo for a new filter. The filter is under warranty but I needed something for the fish today. Upon learning which filter I had, then gentleman helping me said that these filters almost never die and his is about 14 years old. He showed me how to remove the propeller box and clean it out. He told me that sometimes debris settles during a power failure and the propeller can't turn when the power comes back. He was right. I got home, took 2 minutes to clean the propeller, and we're back in business. No need for a new filter after all! I'm feeling really good about my choice of filter. Easy to maintain (once you know what you're doing) and works well!
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60 of 69 people found the following review helpful By S&H on March 1, 2005
Hi..if you are reading this and looking for a new or replacement filter, AquaClears are great. My 70 (300) is extremely quiet and my aquarium is crystal clear. Even though the filter comes with sponge, carbon and BioMax, you can set it up which ever way you want. The sponges can be washed in aquarium water to save a few dollars and maintain your biological filter. Cleans easily. The old number represented the gallons per hour. The new number represents the maximum size aquarium. Good luck.
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21 of 22 people found the following review helpful By Kevin on October 6, 2010
Verified Purchase
After receiving this filter damaged, and returning it (easy, quick process - thanks Amazon!), I ordered another, which arrived in just a few days. Fairly easy to install. A couple minor issues:

When on high (variable speeds, remember), a small amount of water drains back out into the tank on the intake side of the filter. Not a huge deal, but frustrating. An overflow hole in the media cage should drain the water out onto the correct (outflow) side of the filter, but it doesn't. I have it set to a slightly lower setting, which fixes the issue.

The cheap plastic cover vibrates and increases sound. Not a whole lot, and I should be able to minimize that by putting a few pieces of rubber seal under it. But then, Aquaclear could/should have done the same.

My tank has a slightly wider-than-normal rim, so the filter doesn't quite fit perfectly as it hangs over; it is probably 1/2 inch higher off the rim than designed (though still level), which increases waterfall distance, and therefore noise. I could try jamming it down further, but I would imagine its plastic case would crack.

Overall, after 3 days, it works fairly well, and isn't terribly noisy, and thanks to the media cage design, I can be creative with the media make-up (carbon is generally unnecessary and can be replaced with anything you'd like).
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