Hi all, I just purchased a 4 feet tank and I am not happy with default piping.. This is the picture of what it comes from the shop: The overflow box is on left back side of the tank and has two wholes drilled. One (I think 2 inch) drain and one (I think 1 inch) return. The water from the drain goes one by one from first to last room in the sump where the return pump sits. Now I would like to change this and have the last sump room (since is the biggest room) transformed into