FC / CC test and water temperature

Mam262

Bronze Supporter
Jul 26, 2015
127
Lansdale, PA
Hello,

Does water temperature affect the FC or CC test? I opened my pool and the water temp is 57 degrees. If I test FC and CC as soon as I take the water sample will it read differently than if I let it sit inside and warm up to room temperature?

Thank you.
 

mknauss

Mod Squad
TFP Expert
May 3, 2014
18,277
Laughlin, NV
Water temperature has no effect on FC testing.

The only test it might effect is CYA. And that is for very cold water
 

Mam262

Bronze Supporter
Jul 26, 2015
127
Lansdale, PA
Thank you very much. I believe I found what my problem was. My FC reagent must of gone bad. Might have been 2 or 3 years old and when I used it, it showed I had very little chlorine despite clear water, and CC of 0. This was despite pouring many gallons of bleach into my pool. I used new FC reagent from my Troublefree Test Kit and showed I had FC of 30!!! I tested it twice and came up with 30 both times. Now I know it was not the water temperature but the reagent.
 

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