I just drained my fiberglass pool to remove all the CYA at the end of summer . I have been using a frog automatic chlorinator in the past . I thought I would use a couple of Frog chlorine paks to bring the CYA from 10 after the drain up to 50 and then turn it off and use chlorine beach and be done with the Frog system . I only used 3/4 of a pak and the CYA levels are up to 50 already in about 3 months time . My tests show 50 on the Taylor kit and 34 on my Color Q water analyzer , 34 seems correct .
I am wondering if the CYA test is affected by temperature ?
That maybe why I am getting increased CYA levels so quickly because the water is 58 degrees ?
I called Taylor they said no, water temperature does not effect the test
I took the Frog Pak out and will keep testing the CYA to keep an eye on it. I surely don't want to drain it again so soon.
Anyone know any different about water temperatures effecting CYA tests ?