- Joined
- Feb 28, 2017
- Messages
- 607
- Reaction score
- 378
Per the title, I cant seem to figure out what is growing on my rocks and back wall. It is a deep purple/red alge. It is not a mat like cyno, can’t be blown off. Tried red slime remover and that did not touch this. It is hairy but not long, very very short hairs. No bubbles on it per se. it is spreading. This is the best close up pic I can get.