Aqua One 4s Sponge Pad Set – 2 pack (one complete change)

The Aqua One 4s Sponge pad set is a rinsable filter foam pack for use in the AquaStyle(AR) 850 aquarium. The foam layer goes between the Carbon C cartridge and the bottom layer of BioNoodles. It traps larger debris and cultures helpful areobic filtration bacteria.

A pack of two is supplied and the sponge sheets should be removed and rinsed in a little aquarium water ( not tap water) when blocked with fish waste and debris. This will usually be every four to six weeks. After several months the foam cell structure begins to break down and the sponge pads should be replaced.