MEXEWORD Square Fish Tank Filter Bio Sponge High-density Water Purification Biochemical Sponge Pond Aquarium Filter Media Replacement Cotton Aquarium Fish Tank Filter Fittings(S)

MEXEWORD

This sponge is an accessory for fish tank filter. Using environmental high density sponge filter,can absorb dirt,quickly resolve fish feces and eliminate smell in water. Combined air pump using,can improve water oxygen level. achieve oxygenation and bio-filtration double effect, keep water clean. 3 size can be available for you to choose and high density makes great effective filter effect.