FWIW - On my 37 Cube (18Wx20Lx24T) I am running 250Watts, I almost wish that I bought a 400W as I find the light intensity really drops off about half way down the tank.
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- Greg
90G : Light - Tek 6xT5 | Skim - EuroReef RS135 | Flow - 2xVortech MP40W | Control - Reef Keeper 2
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