Foam Sponge Block Filter 2" X 6" X 6" Aquarium Sump Refugium Wet-dry Filtration
This listing is for one sponge. This foam block sponge works great for wet/dry, refugium, and basic sumps. It is also great for DIY filter projects. You can cut and shape the foam easily with a razor blade. Measures 2" x 6" x 6"