barreltwist
Member
There is a purple lichen like stuff growing to the sides of my 34 gal aquarium and on my rocks. It looks like the purple stuff on a live rock I got like 4 years ago. Is this stuff good or bad? Should I scrape it off the glass? It started in little spots and just expanded outward. It's kind of pretty really. What is it? I hope it isn't bad, because I kind of like it....