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jda · 04/11/2018, 08:20 PM

LEDs at 100% are likely your issue. Unless they are way high over the tank (like 18+ inches), you are probably hurting the coral with the bad waves from the white diodes... most white diodes are not good for coral and have to be kept low.

Is the frag rack on the front or sides and out of the way from the LED direct fire? If so, then I would look to this as evidence, turn the LEDs off and just run all 8 T5s for 10 hours and see if everything it not awesome in a few months.

04/11/2018, 08:20 PM	#4
jda Dogmatic Dinosaur Join Date: Feb 2004 Location: Boulder, CO Posts: 6,256	LEDs at 100% are likely your issue. Unless they are way high over the tank (like 18+ inches), you are probably hurting the coral with the bad waves from the white diodes... most white diodes are not good for coral and have to be kept low. Is the frag rack on the front or sides and out of the way from the LED direct fire? If so, then I would look to this as evidence, turn the LEDs off and just run all 8 T5s for 10 hours and see if everything it not awesome in a few months.