I am a retired US Navy Chief Petty Officer and Oceanographer having served 28 years; so the sea has been my life. I am a rescue diver and lived in Hawaii for 17 years. I received my PhD in Oceanography from the University of Hawaii Manoa have been in and out of the hobby a few times over the last 40 years. My last tank was 800 gallon fish and live rock, with a 400 gallon sump/ refrum, I lost it in a divorce I couldn’t take it, it was built into the wall. My wife and I have decided to get back into the hobby to help with my PTSD, ( my shrink recommended it )but we are taking our time and trying to catch-up on 15 years of tech advances in the hobby. That and the fact we are going to move south to South Carolina in the next 6-8 months. We are planning on a 300 gallon reef tank with a 150 Gal sump / Refugm with fish so there is a whole lot of research and reading to do before we take the plunge. Any suggestions are appreciated