This light has the ability to increase up and dim down, over the course of the day. I have it maxing out, at about 90% right now. And I have also illiminated the red and green colors from the light. I have found that those colors cause excessive algea blooms, and don't really look very nice, to me. It's heart wrenching to see full colonies, that have taken me more than year or more to grow, turn brown, just because i wanted to keep up with the trends, or save a few bucks on power and bulb replacement.
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