I have a 125 reef about 2 1/2 years old. everything is doing great. I had started to notice white roots a few months ago. The are white, soft, round and look like roots of a plant. they now seem to be spreading all over on the back side of the tank under and around the live rock. i would show a picture but i am not sure how to do it so i am not going to try. Does anybody know of a easy way to get built up coraline algae (besides scraping) off the sides of a glass tank?