Latest test results should I adjust CH

[lungs414]

Ph 7.6
Fc 4
Cc .5
TA. 80
Cya 75

CH 20

Compupool SWG
22000 gal vinyl in ground

Thanks
Rich

 

[duraleigh]

There is no indication any CH is needed for a vinyl pool so I would leave it alone. How is your water so low in CH? Is your tap water that low as well? Do you have a water softener?