BONDED FILTER PAD Pre-Filter media is a white Filter Media 144" x 12" Pad Size that allows the ability of micro filter the water for Crystal Clear viewing. Cut to size as you need. It is mostly used before the water gets into the Sponge, Sump media etc.
This unique 2 Layers in 1 filter media pad combines a typical aquarium filter pad with a water polishing pad. The top layer’s open fiber construction traps LARGER PARTICLES while the bottom layer's dense fiber network TRAPS FINER PARTICLES, working together to produce clean, clear water in your aquarium.