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

amazing product for a heavy duty usage

Great replacement product

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 best polishing pads out there!

Great Product!

Great

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.

Good stuff it polish your water

I only used one of these from the box per FX5 filter and they do a great job of filtering out even the smallest of snails from getting into the impeller compartment. But overall they work well and seem to have a lot of Bio-Surface. Definitely a must have for any FX5/6 owner.

Works like its suppose to