Gladys,
That's a little puzzling but probably a cheap, easy fix. I would shock the pool to 15ppm in the evening....test and add accurately.
Tomorrow AM, If your Cl has dropped more than a point or so, I'd say chloramines was your issue. The pool should clear and you'll be all set.
I suggest Ben's kit. It allows you to test your Cl with accuracy and will test for CC's....sounds like you could make good use of it...you have a very good understanding of your pool water but you need a kit to help you measure what you're doing.
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