Foam Sponge Block Filter 2" X 4" X 8" 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 4" x 8"

* photos do not depict actual 2" x 4" x 8" size