Keith A.
Aquarium Advice Activist
I'm looking into getting a backflow or check valve for my tank. I've seen several different types, one of which is a spring check valve that I can get at a local hardware store for about $5.00. Basically the the flow of the return pump pushes the water against a disk that is attached to a metal spring. When the power shuts off, then the spring will close the valve preventing the sump from over flowing. The other is a swing check valve which uses a flapper to close the valve (no spring) and is advertised "specifically for aquarium use" for about $24.00 on E-Bay. Would it be OK to use a spring check valve or should I go with the swing check valve? Does anyone have any other options? Any feedback would be greatly appreciated. Happy Holidays...
Keith
Keith