CSI question

[Capstone]

I am confused about CSI and if I need to do anything. I tested my pool today for the first time using the Taylor kit. The results were as follows:

FC = 5.8 ppm
CC = 0 ppm
pH = 7.6
TA = 120 ppm
CH = 120 ppm
CYA = 58 ppm

With a pool temp of 45 degrees F; I calculated a CSI of -0.4

Is this an issue?

Thanks.

 

[bdavis466]

Low CSI values can be dismissed with a vinyl liner pool. The bigger issue to be concerned with is high CSI values (> +0.6= Scale) and pH below 7 ( due to possible copper damage (if a heater or copper piping is present).

Seasonal drops in temperature and subsequent drops in CSI are expected and of relatively little concern.

 

[MarianParoo]

Also, if you would like to save on reagents, you can use a 10ml sample for FC/CC and multiply the drops by 0.5. The directions are on the inner lid of your testkit box.

 

[Capstone]

Thanks.



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