Sump on a nano ?

[windcoast reefs]

Originally Posted by Acipenser

With both 1/2 drains open fully they easily out flow the return line - actually with 1 closed all the way and the other fully open the Eheim can not keep up.

Isn't that kinda ideal? If the pump can't keep up to the drain then you should be in balance at some point. It may require adding or subtracting some water.

How exactly is it not in balance? Is it gurgling, or is the sump overflowing, or is the tank running to full?