- Joined
- Jan 27, 2019
- Messages
- 57
- Reaction score
- 61
- Location
- San Francisco, Ca
- What state or country do you live in
- California
Noob question 9482. There seems to be a slight oily sheen on top of my tank. That can't be good is it? IM Nuvo 20. 2.5 months old. Ghost Skimmer, carbon reactor. Any idea why this is? My lightly stocked inhabitants do not seem to mind it.....


