tinman
Well-known member
I have not I'd like to get my hands on a meter and take some readings though. I've been curious. I've got my white channel at 50% and blues at 60% and I'm still getting some bleaching. So I'm going to turn them down even more.
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whites 50% to start with on those PR 247 units is too much i think ..
its all IMO but here is how i see it ..
Blue lighting is what increases the color as they have to put out the pigment to protect themselves and at the same time not have much zooxanthelle ( brown stuff) cause they cant do much photosynthesis. ( this can be achieved by high intensity white lighting too but then they bleach more cause white is used more for photosynthesis and they dont need that much zoox and shed it with out the pigment developing first)
what i have always done with any new lighting is to start with low whites and blues ..then drive the blues to 100% and then slowly start increasing whites till i see corals bleach or overreact.
when i had my OR 247 i started wiht 20% white and 60% blues and ended up with 45% whites and 100% blues like after 2 months .. and this is with one unit on a 50 cube.