So, I normally do my lime softening in a food-grade plastic trashcan, but I only needed a little bit, so I used an aluminum stockpot. The inside of the pot turned dark gray after I drained it. I used the water to brew a batch of beer. I didn't think about aluminum corrosion until after I was done brewing.
The water sat at about pH 10 for 12-15 hours. Should I be concerned about excessive aluminum content in the beer?