For the pros that are brining in wild colonies or even just turning brown pieces into the rainbow masterpieces, what is the method you use to bring those colors out? Specifically, multi colored polys like on tenuis’s. I have some in my tank that have great body color, but the polyps just look brown. One is my cherry bomb. When I got it was a picture perfect red polyped frag. However, my nutrients got low and it lost color. Now my nutrients are back up PO4 .05-.13 and NO3 2-5, but some are still pretty dull in color or just plain green.