Morning to ALL.
I have been doing some reading and I am not getting a direct answer.
My tank is 350 deep and I am currently running 4 39W T5 tubes and it looks like the coralline algae on the rocks are not nice and pink anymore they are going white, does this mean I have too much lighting or to little?
I would guess to much as I can see the rocks where there is not as much light the coralline algae is still nice and pink.
So what do the clever guys think, is 4 39W T5's enough for this depth or too much

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