Pool store testing question

[CarlD]

Hi All,

Their numbers were not even close to mine. They tested:

TC 5
FC 5
pH 7.8
Tot Hard 145
alk 85
salt 2500
cya 100

I tested:

TC 7
FC 7
pH 7.6
Tot Hard 210
alk 110
salt 3700 (and my cell reads 3600)


Kevin

They inevitably are testing with strips. You are using FAS-DPD powder. Your TC/FC measurement is more accurate. The pH difference is negligible and I wouldn't worry about the hardness and alk measures. Again, I expect yours to be better.

The ONLY concern I have is the CYA measure. You need to do your own because if 100ppm is correct, you need to RAISE your FC to a minimum of 8 and a maximum of 15 for daily swimming--and shock by going to 25ppm.