Put your thinking cap on. My Brain is fried trying to make it work. I have 2 tanks now. 210 reeftank with 36 inch sump refugium combo/etc on 1st floor of house. 150 gallon fowlr tank with sump/skimmer etc on 2nd floor. I want to only run one sump downstairs on 1st floor. Simple right. Just get bigger pump for reeftank on 1st floor and run drain line upstairs to downstairs. Bigger skimmer etc? Curveball. I want the sump on 1st floor not under tank but across room 20 feet into huge walkin closet with my water mixing station.i have drop ceiling. Want to pump water overhead between floors to closet. The drain from 2nd floor tank also uses same space. One tank right over another 2 different floors. Help? Lol wanted to use around 75 gallon sump in closet for both tanks.I have no basement.