So, it appears that I am growing some lawn on my rocks. My tank is monitored and serviced by my local LFS
. When I (actually my wife) asked him about it this week, he said it was green coraline algae and its supposed to be there. My tank has been up for about 4-5 years and this doesn't seem right to me. I have much beautiful pink/purple coraline algae, but had not heard of this green stuff. The green seems to be overgrowing the pink/purple as well. He showed my wife that it was growing on the rocks and could not just pull off. I know, I know. You can't tell without pictures. I didn't get a chance to take any and just thought about posting this while I was at work. Any thoughts on this?