White mold on my corney kegs?

Question

White mold on my corney kegs?

Ryan Shdo

2019年4月11日 00:31

I've got a basic beer serving fridge out in the garage, just a few taps on the front and some bottles on the door. I'm developing a problem with what looks kinda like mold, I notice it mostly on the black rubberish top area but some on the stainless as well. It looks like it was peppered with a bunch of little tiny snowballs, white round and spread pretty evenly with some areas more concentrated then others. The mold substance isn't on anything else in the fridge; not on the walls or the bottles or on the door beer/gas lines... I have heard of people developing a mold on the ceiling of their sour cellars and it sounds like a "good" thing?

What's going on? What is it? How do I get rid of it?

Fridge temp: mid 30's

It has been going on for about 2-3 months.

Topic mold corny-keg cleaning homebrew

Category Mac

Frazbro · Accepted Answer · 2019年4月11日 00:31

1

Frazbro answered at 2019年4月11日 00:31

Sounds like you might have a leaky seal on the fridge that's letting moist warm air in, where it condenses. Or if your fridge has a condensation runoff tube, it might be blocked.

Graham · Accepted Answer · 2019年4月10日 19:19

It's probably from having too high of a humidity level in the fridge. I have this same problem in my fermentation fridge (develops darker spots of mold) and my keezer (no mold but moisture pools at the bottom of the freezer).

I just make it a point to wipe out the excess moisture from the walls of these two whenever I am messing with beer. I have considered using something like DampRid(?), which is that stuff that absorbs moisture from the air, but I don't know if it will be cost effective to do so.

Bottom line: so long as the moisture isn't causing corrosion on any non-stainless metal, and so long as the mold isn't getting into the actual beer, I wouldn't worry too much about it.

Mark McDonald · Accepted Answer · 2013年1月9日 00:20

I get the odd spot of mould developing in my keg fridge from time to time, particularly when switching between serving and fermentation temperatures. I keep a bottle of diluted bleach or sanitising solution in a spray bottle and give the inside of the fridge a good spray when raising the temperature of if I spot some mould developing.

White mold on my corney kegs?

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