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

catches a lot of fine particles/bits, works well in conjunction with a FX5 canister & other Fluval media. Keeps my 120g w/ large (12+) mixed cichlid stock crystal clear. I have several that i rotate out, rinse and reuse, fairly sturdy filter pad.

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 have been great keeping my tank clean and water crystal clear. Make sure you get enough to change your tank filter system at least once a month.

This is a great product. It fit just like the old one perfect and it seemed very sturdy. I can say that this is just as good or better than the original one. And it seems to be keeping my tank clean.

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

same as store

They fit in the canister filter perfectly and do a great job at filtering out the junk all while providing great places for biological filtration. and plenty of it.

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

I was expecting this to be an exact fit, but its smaller. So I feel it will bypass some of the water it should filter.

I love them, I always have them on hand for polishing water. I use them in sunsun 603b canister, and in cut to fitnAquaclear 50, 70 and 110 hob. Works perfect