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Re: Trichlor tablets can work Moderator note - Moved from here: Trichlor tablets can work - Page 2 I hope this is an appropriate thread in which to add this question. I have exclusively used the TFP method this year for my pool maintenance. After the initial SLAM it has been crystal clear and...

I have read here that a free chlorine level above 10ppm will render your pH test inaccurate. I usually test for chlorine and pH twice daily. I add 8.25% Clorox in the evening, shooting for 7.5 to 8.0 ppm. I have noticed that when I test in the morning (when the free chlorine is 7.5 to 8.0 ppm)...

How do you test for sulfate levels? Is the sulfate level likely to get high using dry acid to decrease pH using liquid chlorine following TFP guidelines?