I went from gen 1 > gen 3 > T5 > reef breeders > gen 4 pro. I love my gen 4 radions. I tried the t5 again, but the heat produced were killer for me. Then the reef breeders didn't seem as nice in color for my eyes. Just my personal opinion on those. Like said before, stability is key with these light and the temptation to adjust the schedule is what makes for bad results.
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