Aquarium Filter Media, Newly Premium 8-Layer Filter Pads for Aquarium, Fish Tank Sponge Pad Foam Filter Accessories for Pond (47" x 12",1 Pack)

I have 2 betta tanks and the filter carriages that are in their filters just don’t cut it, so I bought these, cut them to size and now put them behind the cartridges. I’m looking to have less maintenance with the tank. I think these will be good for keeping the tank cleaner. I’m so glad I found these.

i just got it and have it in my filter for a little extra filterthere was more then I thought so that's a plus for the price XDI have not had it in long but I don't see anything bad with it so far