Corrosion on brass fittings and CO2 regulator in keezer

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Cenosillica

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Dec 17, 2009
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I double my keezer (when out of beer) as a temperature controlled fermenter. Living in Arizona, this works out pretty well as ambient temps are typically too high and I don't like the wet towel in a tub of ice water technique.

This time, I'm fermenting two 5 gallon beers with great activity. Both ended up blowing krausen through the airlock. I took a towel and put it around the buckets to catch the mess until I had a chance to transfer to secondary about 4 days later.

When I went to transfer, I noticed all my brass fittings and my CO2 regulator beginning to show noticable signs of corrosion. It kinda freeked me out. I am not sure if my regulator is now compromised or if this is normal. I've been fermenting different batches for over a year like this now and have never had this problem before.

Has this happened to anyone before?

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