I have a Hot Springs spa and am refilling it today. We have an ozonator and also silver ion, but above that I do use chlorine (Sodium Dichlor) and 'Spa Oxidizing Shock' (non-chlorine, contains potassium monopersulfate). We've always been told to add the chlorine and the potassium mono. at start-up, but I'm wondering if they should be added together? Or should there be a period of time between the adding of the two?
And subsequently, when we test, would we add chlorine (if needed) and potassium mono. together?