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- Jul 13, 2013
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Just curious as to see if anyone else has the same experience as myself. I have a radion pro gen 2 over a 60 gallon cube with 95% SPS. I get pretty good growth and color, but the only polyp extension I ever see is at night. I've talked with a few reefers in my local club and they have said the same thing (LEDs tend to inhibit polyp extension). Is it possible the narrow beams of light cause the polyps to retract during the day?