Hey SCR, I have posted about sumps before, and I decided to go with 2 10 gallons underneath my 55. I was thinking of grabbing an overflow box (All sides of my tank are tempered) and draining it into tank 1, which will have two chambers, a protein skimmer and chaeto section. The tank 2 will also have two chambers, which will be a second fuge and the return pump. Here's where it gets tricky. I have to think of a way to get the two to connect. I have tank 1 raised 2" higher than tank 2 to overflow down. I'm thinking an overflow of some sort, not entirely sure how. Any ideas on how to get the two to connect? P.S I don't know how to drill tanks :dontknow: