Tank looks great. I remember the feeling of setting up my tank. I moved everything around all the time never being happy. Obviously just a suggestion, and by no means take it critically. If that were my tank, I would try to pull the centrer base rock away from the back wohich could pull the sides in away from the glass and add a larger swimming area for the fish eventually. Propping rocks against the back wall of your tank is far better than against the sides, adn it allows the sides to be good room for smaller corals like star polyps, zoos, and even mushrooms to grow onto. If you are having trouble with the rocks not staying where you want, you can get epoxy that quicksets underwater and use it to place the rocks how you want. I too, would stop adding things (super hard I know) and just let the tank mature without much livestock. Forget turbo snails, get nassarius. They will eat everything adn more than turbos. Forget the hermits too. They willeat your copepod population as well. Your tank will stabilize with frequent water changes, and the threat of unwanted algaes will dwindle with just nassarius as well as stabilize. Flow can be created by adding a small power head, probably 100 to 200 gph on an opposite side of your tank than the inlet. It will also help the biological filtration multiply adn make the parts of your tank that are still mobile and elliminate the the growth of unwanted algae.
Good luck and keep up the good work. And the pics
R545