- Joined
- Apr 3, 2017
- Messages
- 2,474
- Reaction score
- 3,407
My tank is a little over a year old. Dry caribsea liferock and a few pieces of liferock for diversity. This brown coating on the sand is driving me nuts! I tried a three day blackout. A few days later, it came back. I've cut back on my feeding. I do weekly 10-12 gallon water changes, it a 120. I vacuum the sand regularly. Any suggestions?