cato
New England
Are they intense light lovers??? As mine encrusts and new polyps develop they are sweet florescent colors. But as it grows out more the polyps brown out. My superman is doing great but its also about 6" higher than the rainbow. Wondering if they demand intense light to really color up. All params are good with the exception of of PO4 @ 0.06 (via photometer reading) Could that be doing it?? Thanks all.