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Using TF100 test kit from last year i was getting CYA reading of around 40, when i ran out of reagents i had my water tested at Leslie's and got a CYA reading of 30. I ordered new reagents for the test kit and the first test with the reagents was CYA of 65. All readings were within 5 days...

I put 6 bottles of bleach in my pool last night and woke up to foam on top of entire surface of pool water. What did i do wrong and how can i fix it?

Have had a pool for 20 years and this year i have a problem i can't seem to conquer. These may be separate issues but here goes: 1- DE in pool. I replaced 4 of the 7 or 8 filter cartridges, 3 of which had obvious holes/tears in them but the DE is still making its way back into the pool. I...