Welcome to our forum.
I've tried SoftSoak and liked it but it did require more attention than I was able to give, I rarely test my spa once a month and might go a year without a refill. I have recently looked at the Pristine Blue but have yet to try it so I wouldn't feel right about giving advise or recommendations. If I haven't used something on my personal spa at home I don't push it on others.
The closest to chemical free we have gotten our tub after a number of experments is Nature 2 in a D1 ChairmanII, 1 tablesspoon MPS after each use and 1 table spoon of Dichlor once a week.I tried just MPS/N2 and no Dichlor, water went cloudy after 2 weeks regular use.
A biguanide system (Soft Soak, Baqua Spa) is the only other alternative but the hydrogen peroxide in the shock can be harmful to the spa.I would never use or recommend it but if you have a customer that is dead set against chlorine or bromine it is all you can use.Gary
A biguanide system (Soft Soak, Baqua Spa) is the only other alternative but the hydrogen peroxide in the shock can be harmful to the spa.
Gary, have you tested the Pristine Blue?
Yes and I did not care for it. It is copper based and it is not nearly effective as chlorine. They do not even claim it is a sanitizer.