Hey gang, I have a FOWLR 55 Gallon tank and noticed apprx. 3 mos. ago some pale yellow "finger like" growths hanging down from a live rock ledge. They look like sometype of algae growth (seaweed type). It has managed to spread to a little bit larger than a fifty cent piece. I can't tell that any of the fish are eating it, but it doesn't seem to bother anything.
Here's a pic: