Every bottle I have gets a haze/deposit on the side of the bottle. It is only on the vertical or slightly upward facing surfaces (never anything in the neck).
It is a bit like hard water deposits. It doesn't rinse out. I keep a bucket with about 2 gallons of mild bleach solution in it (soaks blow-off hose, and airlocks, etc as they get used), and I find I have to put the bottles in the bucket (fill the bottles), and after a few hours the deposit is gone.
Anyone else have this problem.
I use several yeasts, and they have it. It is on bottles at 3 weeks (fresh Pale Ales or Berliners) and beers brewed and bottled a couple of years ago (Barleywines and sours).
I do have hard water, and that may be the cause, but if it is, then a lot of people should see the same thing. However, my beers frequently stay in the fermenter for 6 to 8 weeks, and I would have thought most of the salts would have dropped by then. Even my sours that are in the fermenter for up to a couple of years do the same thing.
I'd love to know what the cause is, and if there is anything I can do to get rid of it. I might try a batch with bottled water to see if it is the water. What bottled water do people normally use?