So I am planning out my DIY sump, a 40gal breeder plumbed in the basement. The first question is Skimmer before fuge or skimmer after. Then I need to know what else I will probably plumb into the sump in the future. And lastly is the hotly debated question of what return pump to use, I like the adjustability and ease of the dc pumps. I have figured out approx 13 ft head pressure. Any advice is welcome!