Believe it or not I actually did read the label on the tubMIke Lycett wrote: Sat Dec 13, 2025 7:58 am Good to hear Steve
I'm sure you'll see no ill effects - and if anything I'd like to see them a little bit sharper
and it says 1/1000 as drinking water disinfectant so 4 1/2 grams per gallon if my math is correct