[I read wet web media and they recommend them I read live aquaria and it suggest the yellow is trickly planktonic will not disturb corals. But the Black might
which is really horrible because the black is supposed to change colors 
Any one have one or done any good reading? Fenner's book Conscientious Marine Aquarist says they are moderate in hardyness choice?]
Any one have one or done any good reading? Fenner's book Conscientious Marine Aquarist says they are moderate in hardyness choice?]