Help! What type SWG should I install?? Just bought a home in Scottsdale with 15K gallon pebble tec play pool. It has an old EcoMatic ESC24 installed that doesn't work. We have a Hayward sand filter and I don't know what kind of pump. Was planning to have Leslie's do the installation - hopefully can buy what type I want. Plan to buy the recommended Leslie's test kit and get started with BBB. You guys are great!!!