Make sure the pool has adequate circulation but not more than it needs. (Calculate your circulation needs). Check the pool’s filter gauge and clean filter per the manufacturers' directions. Check your pump and skimmer baskets to ensure they are free of debris. Balance your pool water (see water balance guidelines). Establish a chlorine residual of at least 1.0 ppm with a chlorine shock following manufacturer's directions. If using FROG, insert your minerals and chlorine pacs into the system and set the dial according to your manual.