I just set up a 15g saltwater on Sunday. 3 in crushed coral, filter, powerhead, heater, and marine bulb setup. I have a lot of questions. Should I vaccuum out the coral because when I move it the powder engulfs the water? Also, when should I add cured LR? This is a FOWLR tank to be by the way. Another question is when should I add my janitorial critters? Any advice would be appreciated.