Converted from a Stenner method I was using on the new tub, and I couldn't be happier . Nothing at all from the Stenner , if was rock reliable , I just grew Weary of the liquid chlorine. I changed the pool in excess of to a Circupool RJ60 (also https://pool.net/achtformbecken-8-55-x-5-00-x-1-50-m.html