My bad. I was thinking 1qt = 6ppm. I must have put in more than 1qt last week to get it to shoot up so high. I was waiting for the Cl to drop but we some dark days and then it drop like a rock on the sunny day. Now I'm trying to get it back up. I just miscalculated a little.
When you say shock, bring the Cl up to 10-15ppm range?
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