This is my first attempt at building my own sump. The reason for this attempt was to be able to get my skimmer and heaters out of sight. I also don't know ic its the best set up but gonna give it a shot. The water is gonna flow from left to right. And the question that I have is that I am planning on having the skimmed in the middle compartment then planning on having it empty into the right compartment where the return pump will be. Since I am planning one the skimmer being the only way water gets into the final compartment does the intake pumps capacity for the skimmer and the capacity of the return pump have to be equal?