15.3k gal IG plaster/pebble pool w/ raised (12") spa w/ 24" spillway, screen-enclosed, built mid-2014, all Pentair equipment: 200 ft2 Clean & Clear cartridge filter, IntelliFlo variable speed pump (3HP/1.32SF), Intellichlor IC40 SWCG, MasterTemp 250 propane heater, EasyTouch controller. Test kits: Taylor K-2006 and K-1766 (salt). -- I auto-donate $1/month. Match me. With 25+k active forum users, it will really add up. ~Gene