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

Makes water very clear. Great at filtering out fine particulate matter.

Product is keeping my tank clean and water crystal clear. Make sure you buy enough that way you can switch them out once a month.

been eseing this for ye

Excellent product. Just what I expected of Fluval.

Ive bought the same filter from the past but from a different vendor. Im not sure if I got a bad quality. Anyway, the water in my tank started to have these foamy particles from the filter that I bought.

Indispensable for a Fluval FX5 canister filter. The white polishing pads are too dense and get clogged far too easily and quickly. These blue pads are a good compromise.

We love these for our FX6 filter. Have a cichlid tank with 30 fish and these filters are amazing!

Perfect fit easy to clean.

I use these to clean the sides of my aquarium walls. They work great for cleaning both brown and green algaes off of the glass. I dont know what I would do without them - they work better and are safer than any other sponge or cleaning pad that I have seen.

I think it is hard for me to judge exactly how well these work, because i implemented a lot of different filter media at the same time. In cooperation with the other media, the water in my tank is good. I have a 75 gallon tank with one red ear slider and a fluval FX5 filter. I use 2 of these pads in 2 different trays.