Find my Homebrew Twang

[flars]

Your tap water contains chlorine and chlorides. Just don't use it for brewing. There are some treatment methods, but wouldn't it just be better to use water that doesn't need treatment. After using 'good' water and something seems off, tracking it down through the brewing process will be much more definitive.

 

[mbbransc]

I bought some campden tablets FRI manufactured by Crosby & Baker. It states it equates to 30 ppm of SO2 in 1 gallon of water. I feel like that is less than most campden tablets (I'm guessing around 65-75ppm). Can anyone confirm how much I need to use in a 5gal batch?