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I am not used to having low calcium right now FC 4.1, PH7.6, TA131, CH216, CYA43,csi -.04 temp guess of 70, new thermometer being shipped. Our area normally has tap water calcium in the high level to start out. Do I need to add more Calcium or is it alright with my csi. 15Kgal plaster pool and...

I just over a month ago added a 7.5 gallon tank and Stenner 3gpd pump. I have changed from Clorox to HDX Chlorine after Sam's Club ran out. My chlorine level keeps bouncing day to day. Over the last week 5.5, 2.5,4.5,4,4.5,4.5,0,9 all taken just before dark. I changed poolmath from 6% to 10%. I...

I just put in a stenner pump 3gpd to keep chlorine levels up when I am out of town. It is on a timer. What is the best time of day to add, the evening so it has all night or in the morning so levels stay more constant? I am on time of use so I avoid 12 noon to 6pm pump runs. Also is there any...

I did a refill a year ago. My calcium Harness is now 530. I just looked back at my excel file and my first CH after refill was 220. I just looked up the city water quality report and it says 114 avg ground water and 76 average for MWD water. There is a well 1/4 of a mile away so I am guessing I...

I have just started with TFP and switching to liquid chlorine and borax. I am still working on getting my TA down to add the Borax. Everything that I read on safe levels of Chlorine for swimming is to stay out of the water above 4. The chart for Plaster pools with bleach says 5-7 with a shock...