Hi Rob, does this algae look like the picture in this thread?
http://www.canreef.com/phpBB2/viewto...hlight=maidens
I had it on a single rock that I got with my zoos. It never spread off the rock as I had it on the sandbed by itself. I tried to remove it but it always came back.
It was actually very nice looking but it overtook the rock from the zoos. I sold the rock and havn't seen any since.
Dave