Is it possible to have to much lighting in a tank? Can Corals burn like plants if the lighting is to intense? I am looking to upgrade my lighting system in order to support SPS corals and tank growth. My tank is 55 gallons 48" wide and 15" tall. Currently I have 265 watts of florescents and want to upgrade to either MH or T5s and am wondering exactly what it is I want to get. Maybe a dual 150 MH supported with florescents or maybe a 6-8 bulb t5 fixture. Does anyone have any suggestions?