Qzbhct 8 Pack 2 Size Aquarium Bio Filter Media Sponge Foams, 7.5 x 4.7 x 2.75 inch 5.5 x 3.54 x 2 inch Cut-to-Size Foam

Fit for Aquarium Fish Tank Filtration Systems
Performs mechanical filtration by trapping particles and debris as they pass through the insert
Enhances biological filtration, provides efficient water flow with less clogging for long lasting filtration, custom fit to prevent bypass
Good for freshwater and saltwater environments
Package included: 4 Pack Qzbhct 7.5 x 4.7 x 2.75 inch Cut-to-Size Foam and 4 Pack Qzbhct 5.5 x 3.54 x 2 inch Cut-to-Size Foam