BigOlBandit

I agree, our bromine program was working fine but we didn't like the smell of skin after, so based on what our neighbors had been doing for 5 years already, we switched to a cup of 35% peroxide (costs $4/liter) twice a week and that had worked perfect for a year until a month ago we got some algae or something, so we shocked it with a dose of chlorine and now it seems we are back on track with the peroxide. A year ago we originally used municipal chlorinated water, when we changed it out 6 months ago we just used 1/2 hard water from well, and 1/2 softened water, and that seems to also work well. We have learned that when our pH gets out of range the water gets cloudy but a correction gets it clear again. And the number one thing we learned, change the filter every two weeks.