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

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!

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.

same as store

A must for the FX6

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

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....

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

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

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!! :)

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.