I have a patch that came on the rock my
BTA was attached to. I've had it about 4 months and it has grown a little bit but not like crazy. I skim and have a light bio-load so maybe it is the nutrient thing. I tried scraping a piece of it off the rock while it was in the water to give some to another person with no luck. So I guess if it goes crazy I will siphon it off.