My new hot tub is being used mostly in the early morning and at night. I have not added any CYA since it is covered except when in use, hence little UV exposure. And water temperature is depleting my chlorine anyway requiring several additions of HTH daily.
Am I correct in assuming I do not need CYA?
350 gal at 103 *F.
HTH, muriatic acid, sodium bicarbonate, calcium chloride, and borax