Fluval FX4/FX5/FX6 Bio-Foam, Replacement Aquarium Filter Media, 2-Pack, A239

(1465 Reviews)

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$12.99

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(80000 available )

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135 Ratings
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Reviews
  • Jeff Thompson

    Greater than one week

    Well if you have seen any of my reviews about Fluval or Seachem products, you undoubtedly will come to a conclusion that I only use these 2 products & I buy in bulk for the best price. Why? Because they work plane and simple, I have seen the off brands at great prices and even gave them a shot, while the off brand does a good job, I found that at least in my setups (multiple very large tanks and heavenly stocked Cichlids African and SA/CAs which are very very large and messy fish) the off brands clogged up a bit faster. I am a fantic when it comes to maintaining my tanks. I run a total of 5 Fluval FX6 filters (2 in my African 135 and 3 in my 220 CA/SA along with 3 Fluval FX4 in my other 3 tanks from 30 to 90 gallon) These polishing pads really trap and polish the water combined with The Blue & White Fluval pads and water is crystal clear giving the illusion my fish are floating on mid air. These filter pads work in many other canister filters as well with very little effort. Bottom line if you run any of the Fluval FX series these pads are a must and ate worth every penny!

  • Bob

    > 3 day

    Works for my fluval FX4 but the package was smashed. Filters themselves were ok because they are soft and the material sprung back. Amazon needs to package this item better i.e. in a box not a soft envelope. Also the ratings included Noise level and suction which makes no sense for this product.

  • A.B

    > 3 day

    same as store

  • Brad Taylor

    > 3 day

    A must for the FX6

  • Prof. Andres Schulist III

    Greater than one week

    The only Fluval product I would not recommend would be the partially submersible heater.

  • pauliejsb

    07-06-2025

    This pad got hammered in my FX4. I put it on the top instead of the bottom of my baskets. Like an Idiot i thought the flow went the other way. Did the same with the hoses at first....

  • Randall Crane

    > 3 day

    These pads work great at catching all the super small things floating around in the tank and truly helping the water give that crystal clear look

  • JANA

    > 3 day

    excellent product easy to use and does a great job keeping the fish tank clean

  • phillygrl

    > 3 day

    I use these polishing pads in my Fluval FX6 (75 gallon tank) on a regular basis. My aquarium water is crystal clear because of these pads. I change the pad every 30 days. By the 30th day the pad is black and about to fall apart. Ive noticed some green algae on the pad so I think it is blocking some algae from being pumped back into the tank. Never had any problems with these polishing pads and Ive been using them for 2 years now. They fit in my Fluval FX6 perfectly and they do what theyre advertised to do! Perfect! If this review was helpful in any way, please let me know by clicking on helpful. Thank you so much!! :)

  • Justin

    > 3 day

    Works perfectly for my cannister as it should! I have not taken a chance on off-brand replacement media so I dont have much to compare to but obviously if you want direct fit and replacement, this will accomplish it.

Fluval Bio-Foam performs double duty as both an effective mechanical and biological media. It is specifically designed for use in Fluval FX4, FX5 and FX6 High Performance Canister Filters. Bio-Foam provides outstanding mechanical and biological filtration thanks to an intricate pore structure that offers a large surface area for nitrifying biological activity. In addition, it trap small particles that are not retained by the first stage of foam filtration.

For more fish tank accessories, check out other Fluval products including aquarium filters, aquarium heaters, aquarium air pumps, aquarium lights, aquarium rocks, aquarium thermometers, and aquarium stands. Fluval has a wide variety of products that are perfect for your pet fish to enjoy in any large fish tank, small fish tank, saltwater tank or freshwater tank. Fluval broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology – a breakthrough that is still applied in the industry today. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products that remain at the forefront of technology, and which set the bar in quality, style and functionality. Fluval’s mission is not just about building products that mimic the natural world, but inspiring aquarists of all skill levels to enjoy and respect the hobby for generations to come.

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