Pool has been clear all year.
I have been using 3” tabs from Sams club.
POOLBRAND - Sodium Dichloro-s-Triazinetrione Hydrated=99% , 90% available chlorine
POOLBRAND Quick Dissolving Shock- Sodium Dichloro-s-Triazinetrione Hydrated=99% with 55.5% available chlorine.
Always clear and tested fine with about 1 tab a week in a floating chorlrnator
and then 1lb. shock every 2 weeks.
Vinyl pool 7500 gallons.
Anyway out of town weather got very hot and water got a cloudy. Tested and no chlorine.
Added 2 tablets and a ½ gallon of bleach
Added one pound package of shock twice after a couple of days.
Tested water and chlorine was good and started to clear just a little after a week.
Then tested again chlorine was low so add to more tablets.
After two days it is now very cloudy.
Took sample to pool store.
Free available chlorine = 5.77
Total Chlorine= 5.77
Total A = 112
Calcuium Hardness = 54
CYA = 156
They say I need to drain pool and buy their chemicals. That the stuff from Sams has too much cya in it and that’s what caused my problem. They said mostly the Shock has too much CYA.
Neighbor uses same Tablets but uses Bleach for shock treatment. Should I do the same after I drain?
Thanks for any help