- Joined
- Feb 9, 2008
- Messages
- 235
So I have this slimey coating that is present on rocks and sand, and it is a maroon red color...I assume cyano. It is in the tank I removed my octo from that has metal halides...always used RO/DI water, ammonia/nitrite/and nitrate all 0 with weekly water changes. What could have been the cause of this, and most importantly...how do I remove it?