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    Different CSI readings

    First of all my latest test results with the Taylor K-2006: FC 5.0 CC 0 PH 7.5 TA 80 CH 130 CYA 60 Temp 87 f. When I plug those numbers into Pool Math, it gives me a CSI of -0.63. When I use the Taylor whiz wheel, it gives me a CSI of -.30. I am confused about the difference. I am...
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    PH spiked with Slam

    Greetings, I am just filling and opening my pool today. As the water was being topped off, the PH tested at 7.7. Now after adding about 3 gal. of liquid chlorine and scrubbing the bottom with a brush, the PH is off chart high- purple.?? Fc 20 TA. 80 CH 200 CYA 45 ? temp. 50 deg. Help...
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    Pentair Mastertemp 250 E05 Error

    Moved from HERE I have the same heater and I do get an E05 code. This happened after about 16 hours of rain. I feel the rain must be the cause. Before I tear into it, could it dry out and fix itself or do I need to drain/clear something first? The exhaust temp jumps around under 110 deg. then...
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    SWG and Copper

    This is our first year using a SWG. New phenomenon is green tinged hair for my daughter. A copper test at the pool store showed the level to be quite low, at .15 if I remember right. I got some metal stuff and put it in, but it hasn’t helped very much. My PB was here today to adjust the pool...
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    Getting my first SWG-Pentair

    My pool is closed until next month but I have more or less agreed with my PB for him to install a SWG when he comes to open it. He has a Pentair IC40 with his own pool and recommends I get the same one. That's fine with me. This will be the second year with this pool. I have a 120V receptacle...
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    Drain Water to Winterize

    Move from HERE I also need to drain down my first year pool for winterizing. The guy closing it wants me to drain it down not just below the skimmers but also below the returns. And I want to do that to lower the CYA for next year. The problem is the overnight temps. F will be in the low 20’s...
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    Can you do OCLT with cover on the pool?

    Moved from here. Can you do an OCLT (Overnight Chlorine Loss Test) with the pool cover on all night?