- Joined
- 30/10/05
- Messages
- 3,447
- Reaction score
- 404
That grey film during spraying is ok. Back to the problem, when you're stirring the mash (after it compacts) the silicon hose maybe allowing the edge of the FB to lift and cause a lot of mash to block the outlet. You said it has happened on three successive brews, what were the grain bills?