Bio Sponge Prefilter Media Pad Cut-to-fit Foam 20” x 20” x .75"

Dense shape makes it effective to avoid residue, the filter sponge is the first line of defense in removing dirt and floating debris from your terrarium or aquarium, and the filter can be cut any sizes as you needed. Excellent water permeability makes it avoid blockages and provide the largest adhesion area for bacteria, cultivate the nitrify bacteria for biological filtration. The filter can decompose the excrement and the forage leftover effectively, leaving the fish fresh water to breath. Offers more surface area for water filter and improve water quality, trap floating debris to help keep your aquarium water crystal clear, and will not get clogged easily. Place our aquarium filter pad in flowing water to trap uneaten food, waste, decaying plants, detritus, and other coarse to small floating particulates from the water. The aquarium filter floss pad, durable and reusable, cut to fit, very good flow, easy to clean, perfect for filtering your aquarium fish tank pond.