To many unknownes...sump or not? Type of pumps...will the tank be in a basement? But....I would still choose the 2 pendants over the Corolife. The reason....you can always shut one of the pendants off on those days where heat is an issue. On a 36" tank I would probably try one 250 pendant with a couple of HO T5's. Less heat and good light combo IMO.
Scott
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