Description
Hydro-Sponge filters stand tall over the competition with superior construction, quality materials, modular design (for easy expansion), and affordable pricing. While other sponge filters require suction cups that quickly fail ,or flimsy bases that allow the unit to fall over into the gravel or sand, the Hydro-Sponge filters are free standing with a heavy base that locks securely in place, but is easy to unlock if needed and is raised to allow sufficient space so that there are no dead areas bet
