Just bought an Aqueon reef ready 210. I am upgrading from a 150 that I have running for the last 10+years. Maybe stupid questions but I am looking for opinions on painting the back or leaving it clear. Also any input as to how far from the wall to leave it. Also open to any other suggestions. I am currently working on the wall its going against. The sump and all equipment will be in a closet on the opposite side of the wall. I am doing some electrical work and running a water line and drain into the closet now.