Ultima 3lb Clean & Refresh for Zeolite Rejuvenate Your Pool. Rejuvenate Yourself. Now zeolite media users have a better way to maintain the efficiency of their zeolite filters. Clean & Refresh not only removes filter-clogging oils and minerals, it also removes damaging ammonia from zeolite media. Cleans and recharges zeolite filter media Improves filter efficiency Works with traditional sand media, too! Removes ammonia buildup, minerals, scale, and oils