Quite a few pieces of my LR has turned a beautiful shiny lime green color. The tank has been up and running for about 2 or three months now. Their is also purple coraline algae growing over some of the green pieces and also on the powerheads. is this green coloring normal? To be honest, the color is so nice tht I wish it would remain that color, but as I mentioned, the coraline is slowly growing over it. I know my lighting must have something to do with the color.