I know these are quite a few threads about these Chinese LED's on the forum but Im trying to find someone thats running a single 1200mm (4ft) unit of 88x3w LED's over a 6ft tank. Does anyone have any thought as my tank (per signature) is 72x27x24 and stuck on lens angle as in what to order 60deg, 90deg or even 120deg???????? Anyone! Thanks. PS, Looking for answers before I order cos I dont want to **** this order up.