I'm in the process of starting a 110 tall build. The dimensions are 48 x 18 x 30. It will be a sps dominant tank with a sandbed around 3 inches deep. assuming the water level will be one inch from the top I will need to punch through 26 inches of water. would 2X 250 watt be suffecient? or would I need to bump up to 400 watters? (cringe due to electric bill and heat) I have no experience with halides (only t5 and pc) so hopefully some of you lighting guru's can help me out. also, i'm leaning toward DE instead of SE unless someone can tell me why I shouldn't.