Previously i had posted my struggles with high CH. I drained the pool 40% when CH went to 450 in March and now back at 440! Fill water at 130 ppm.
Yesterday I added the Lo-Chlor Calcium Reducer. This should bind and solidify the CH so it is filtered out. I had not seen any other posts trying this, so I will report back the results. Should know in 1-2 weeks.