Keep your swim spas in great condition and ready for use with FROG Maintain for Swim Spas. This non-chlorine shock cleaning packet for swim spas works in spas up to 3,000 gallons. Swim Spas, made to use with the FROG @ease Sanitizing System for Swim Spas, which is a complete swim spa sanitizer that is so convenient, consistent, reliable, and effective, it makes water care almost effortless. FROG Maintain for Swim Spas comes in an easy cut-and-pour single-dose packet and dissolves in swim spa water in 15 minutes. It eliminates organic contaminants and is free of dichlor chlorine, which commonly contains up to 50% cyanuric acid. With FROG Maintain for Swim Spas, you get the swim spa water clean without using dichlor and without contributing to cyanuric acid buildup, which means no irritating, itchy or smelly water. FROG Maintain for Swim Spas was made to work with FROG @ease Sanitizing System for Swim Spas – the only complete sanitizing system for swim spas. To maximize the life of FROG @ease SmartChlor Cartridge for about one more week, add one packet of FROG Maintain when the FROG @ease for Swim Spas System tilts at about 3/4 rotated over in the water or three weeks after putting it in the water. For more than 25 years, FROG has sanitized pools, hot tubs and swim spas with its innovative, patented Mineral Technology that makes water care easier. FROG's prefilled cartridges mean no mess, no guess, and no stress pool, hot tub and swim spa water care. Each FROG product helps make your water Cleaner, Clearer, Softer and Easier. No matter what size pool, hot tub or swim spa you have, FROG has a solution for it.