I am having the same exact problem now. I added 4 gallons of shock yesterday with two yellow containers as instructed. I have 30,000. Each container is for 15,000. Completely removed all the yellow dust algae but now I have zero chlorine. Added a gallon today and waited an hour for circulation and took another reading. Still zero chlorine.
How much did you have to add before getting chlorine readings?
How much did you have to add before getting chlorine readings?
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