Name: Sandy B. Ford River Twp, Michigan UP (Zone 4b) (Zone 4b-maybe 5a)
I'd probably use something like a teaspoon to a gallon... I use the granules as well, and just look for a very light blue color to the solution. Not very scientific, I'm afraid!
“Think occasionally of the suffering of which you spare yourself the sight." ~ Albert Schweitzer C/F temp conversion