Qzbhct 6 Pack Aquarium Bio Filter Media Sponge Foams, 6.28 x 4 x 0.78 inch Cut-to-Size Foam for Aquarium Fish Tank Replacement Filters Pad Inserts

Aquarium pre-filter sponge good for freshwater and saltwater environments Traps particles and debris, enhances biological filtration, prevents small and baby inhabitants from being drawn into the filter Good for freshwater & marine environments Provides efficient water flow with less clogging for long lasting filtration 6.28 x 4 x 0.78 inch Cut-to-Size Foam