How quickly does CYA deplete in a hot tub that is not exposed to UV?
What are the consequences of CYA falling below 20? I have seen in the forums that using bleach with CYA at low levels is too harsh? What exactly does harsh mean? Is it unsafe?
Thanks in advance
What are the consequences of CYA falling below 20? I have seen in the forums that using bleach with CYA at low levels is too harsh? What exactly does harsh mean? Is it unsafe?
Thanks in advance