LouieRocco
New member
I'm working on setting up a larger tank with a sump, and was wondering, what do you do when the power goes out? I know the check valve keeps the return line from siphoning back into the sump, but what about the line to the sump that is already going that way? I've noticed modern overflows that have inlets in the top, mid, and lower areas instead of the top, so wouldn't that drain your tank? There must be something I'm overlooking.