Sump Overflow Box
Sump Overflow Box at All Pond Solutions
An aquarium sump overflow box is a quick and easy way to feed water down into your sump and back into your tank, without any need to drill the base of the aquarium. The hang on overflow box will help to keep the surface of the aquarium clean and also keep water levels constant. With an aquarium overflow box, you reduce the risk of flooding from your reef tank.