I just got a new 75 gallon tank that has three holes drilled at the top left,middle, and right on the back panel. I really don't know how to set this plumbing up. It also came with a stand and a sump. Anyone with experience with setting these up, your advice would be greatly appreciated. I already have a protein skimmer, heater, UV
sterilizer. Still need to get lights, and a couple more power heads. I currently have a 30 gallon reef set up. My corals have started to encroach on each other and I decided to get a larger tank.