i have blue ricardia and some green dragon eye zoos that seem to have less color then when i bought them. Could it be my lights are to much for them of they are to close to the top of the tank? They are not bleached but the zoos are darker than they should be and the ricardia are a grey dirty color with bright green center. Oh i have 2 10,000k halides on a 72g bow front and 1 96w T5 .