Anybody know what's wrong with my highlighter acro? It's has lost its fluorescent green color in lots of the coral. The encrusting base is green , along with with some of the tallest branch. All the polyps are still green and there is PE throughout the day and night. I think the loss of color has been slowly spreading. I recently switched from AI hydras to an ATI 8x24. All corals seem to be responding well and coloring up.