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I still use CFLs on mine because i could not get good growth with my red 660/630 mix and a few blues thrown in. Probably a user error of too much power or too long period, but after messing with it a while i had enough and went to a simpler setup.
I do wonder if some of the IR is also useful, as has been said for corals in general too... (running MH again myself as well).
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