You mix up a one drop solution and then drink half of it..
You really should take a class or buy the book, there's lots to learn and some of it is very important (like never touch a metal spoon to it).
I took a class, it was fun and very informative, only took a day or two to "get it" all.
ppm = parts per million
But for the sake of laziness I now only take the capsules of calcium hypochlorite which I make up myself, you can buy it at Leslie's Pool Supply.
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