I have just successfully setup my new 155 gallon tank. Pump is fine, drilled small holes in return lines to break siphon, ball valve on the drain line to control flow to the sump,....thought I had it all covered.
I need help with one last thing....
How high in the overflow "column" should the drain pipes be? Should they be significantly below the water line (seems quieter this way)? Or should they be just below the water line?
When I simulate a power outage, the sump fills up wayyy to full for my taste. It does not overflow but, about another 1/2 inch, and it would.
Seems like if I raise the drain pipes up closer to the water line, less water from the overflow column would drain to the sump. Make sense or am I missing the boat?
My drain pipe originates from the bottom of the tank(in the overflow column) from pre-drilled holes, on each rear corner.
My drain pipe is now about 6 inches or so from the water line....should this be raised up?
My main concern is the amount of water collected in the sump upon power outage.