Jonnyb

Hi, I have read your post with interest. I have just got Spa Marvel water treatement for my tub but I don't understand what my chlorine reading should be now. I continue to use my test strips to take PH and alkalinity readings but I thought the idea of Spa Marvel was that I could reduce my chlorine levels to avoid skin irritations. Therefore can anyone confirm what should my recommended reading be for chlorine or is it a case of putting a certain amount in once a week etc? If anyone has a tried and tested routine for a 900 litre tub I would much appreciate your guidence.