ISTA Hang-On Filter Inlet Sponge

Ista's Hang-On Filter Inlet Sponges attach to the intake of rear hang-on filters or even cartridge filters. This pre-filtered sponge provides an area where beneficial bacteria can congregate and acts as a first line of defense against waste and other contaminants. It also prevents baby fish and small invertebrates from being sucked into the filter. Invertebrates even like to graze on the sponge itself! Easy to maintain, simply wash and reuse the sponge or replace it as needed. Get the most out of your filter by adding a pre-filter sponge to your filtration system.