I am using a HTH kit from Wal-mart, and I probably am doing it wrong. I know that the two previous times I used it the circle at the bottom became hard to see at about 55 or so. But yesterday I could see it, even after the liquid was all the way to the top of the vial.
I'll redo it today and see.
I really appreciate the help and the link to the chart. That's what I had in mind.
So would you recommend just adding bleach? My chlorine level was about a 1 yesterday.
Sorry I'm so confused....
Kerrie