Sublime8365
Well-Known Member
So I recently moved and haven't been able to brew in 6+ months.
My brewing equipment sat for quite some time and about a month ago I noticed that there was still water in my copper coil that I use for my HERMS setup.
Figuring this was not good and thinking I might have to replace the coil, I rinsed with water, did a PBW wash, water rinse, Starsan rinse/soak, water rinse. I didn't notice any blue/green crap coming out of the coil so I figured I was good.
Fast forward to brew day. I brewed and everything seemed normal but during cleaning, the first bit of water that was pumped through the coil appeared blue/green. The water cleared almost instantaneously and continued to appear clear through another round of water, PBW, water, Starsan, water rinses/soaks.
Is this cause for concern? I've read that copper in pre-fermented wort is fine but verdigris isn't copper. Do the yeast eat up any of the compounds found in verdigris? My guess in no but am I being paranoid?
Few more details:
The blue green appeared to come out with some bits of grain. could it have formed around stuck grain or was it just the grain and the oxide coming out at the same time as the first bits that were pushed through?
Having so much time between brews and crappy tap water in my new place, I did a bit of research into water chemistry and this was my first attempt at altering my water through salts/acid. All in all I added approx 13.7 grams of gypsum and 4.7 mL of lactic acid (88%) to 8.5 gallons of water according to the calculations from the Bru'n water tool. I doubt anyone is going to double check my water calculations for me but I brewed Yooper's DFH 60 min clone with a water profile similar to this: https://www.homebrewtalk.com/f128/yet-another-water-report-houston-tx-323616/ .
Would my additions have created the corrosion/oxide?
Overall, is it possible that the amount of copper oxide that got into my pre-fermented wort is going to make me sick? Doing my best to RDWHAHB (actually craft brew in this case) but am paranoid that I ruined a brew that took some extra effort because of my first stuck sparge.
My brewing equipment sat for quite some time and about a month ago I noticed that there was still water in my copper coil that I use for my HERMS setup.
Figuring this was not good and thinking I might have to replace the coil, I rinsed with water, did a PBW wash, water rinse, Starsan rinse/soak, water rinse. I didn't notice any blue/green crap coming out of the coil so I figured I was good.
Fast forward to brew day. I brewed and everything seemed normal but during cleaning, the first bit of water that was pumped through the coil appeared blue/green. The water cleared almost instantaneously and continued to appear clear through another round of water, PBW, water, Starsan, water rinses/soaks.
Is this cause for concern? I've read that copper in pre-fermented wort is fine but verdigris isn't copper. Do the yeast eat up any of the compounds found in verdigris? My guess in no but am I being paranoid?
Few more details:
The blue green appeared to come out with some bits of grain. could it have formed around stuck grain or was it just the grain and the oxide coming out at the same time as the first bits that were pushed through?
Having so much time between brews and crappy tap water in my new place, I did a bit of research into water chemistry and this was my first attempt at altering my water through salts/acid. All in all I added approx 13.7 grams of gypsum and 4.7 mL of lactic acid (88%) to 8.5 gallons of water according to the calculations from the Bru'n water tool. I doubt anyone is going to double check my water calculations for me but I brewed Yooper's DFH 60 min clone with a water profile similar to this: https://www.homebrewtalk.com/f128/yet-another-water-report-houston-tx-323616/ .
Would my additions have created the corrosion/oxide?
Overall, is it possible that the amount of copper oxide that got into my pre-fermented wort is going to make me sick? Doing my best to RDWHAHB (actually craft brew in this case
) but am paranoid that I ruined a brew that took some extra effort because of my first stuck sparge.
