- Joined
- Dec 30, 2019
- Messages
- 56
- Reaction score
- 29
- What state or country do you live in
- California
Started appearing only on this one rock in my tank but it rapidly growing I even see some black on top of parts of the sand bed and on a few other rocks on the other side of the tank now what is this and how do I get rid of it? Is it normal part of the cycle and i just have to ride it out?

