JKM1009 Features: * The most advanced start up and stain-fighting product available * Fast-acting and long-lasting sequestrant helps remove metal stains and scale * Helps control plaster dust and scale build up * Highly effective in all pool sanitizer systems (including salt chlorine generators) * Cleans and prevents scaling of salt cells; helps extend cell life * Contains Phos-Stop Plus - removes phosphates and orthophosphates * (IMPORTANT: Please refer to Specification Sheet below before use) Options: * Available in quart and 5 gallon size Specifications: * Part of Jack"s Magic Stain Program (Step 3 Prevention)