Welcome to the board.
IMO, the lighting issue all depends on what kind of tank you are wanting.
Are u going to have corals? if so, what kind? some types require alot more than others...if you want SPS and Clams you will probably want 400 Watt MH with a 30 inch tank.
if you are going fish only, the lighting isn't as big of an issue.
BTW...huge tank..good luck with that and keep us in the know how it is going.
Neal
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Way too much time and money has gone into this hobby....and yet, I CAN'T STOP
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