Alright, so I know I haven't posted to this thread in a while now and that is because my tank went back to square one. A total redo if you will.. lol. All the water that was in the tank is now being used to cure my dry live rock (50 lb) and all the crushed coral has been removed in favor of some Black Hawiian sand. I am currently in the process of building a DIY sump to place under my tank also which leads me to my next question.. bulkheads and drilling holes. Not so much drilling holes but the location of holes. Obviously the overflow hole will be near the top of the tank bit does that mean the return hole also needs to be at the top? Being that my tank is a corner tank it is actually taller than it is long and wide so I would save a lot of energy if I didn't need to pump it all the way to the top. I know I got a lot of random questions but I am a firm believer in measure twice and cut once so I like to do a lot of research. Thanks for all your help guys..[emoji106]