- Joined
- Jan 20, 2017
- Messages
- 118
- Reaction score
- 45
About a week ago I started noticing this very light purple/pink color on my rock I thought "yeah coroline algea that's awesome right?!" well it's grown a lot since then and is starting to turn black (almost like a black goo" and it's spread to some of my sand bed as well

I love it. Used it once and havent seen it back in any of my tanks.

