I've had personally and read one other thread that acro tips are turning green.
I've had it on an sbreeflight and ai sol.
I just got all the SB under the ai sol in the bigger tank now and Have not finished the experiment so I haven't said anything.
I don't run extended blues. I'm at a med par Lux. I have a long but not intense photoperiod.
What i think it is maybe nutrients in the SB tank. Or odd Alk. Or a spectrum at this intensity that is overloading the coral and making it fluoresce but only that pigment.
D riddle at macna said and I've also read pigments are generated when photo synth for growth shut down. Usually at 350 par. That's when growth and alk uptake slow down and then the energy is sloughed off back into the
zoox cells and excrete the pigments as waste. Probably excretein
zoox or the dinoflagellate back into the water in the wild.
But if the spectrum is not even or spiked higher than a mh or t5 spectrum it's targeting one
zoox and overloading only that one.
Or it's a trace mineral deficientcy.