Spa Frog Serene Floating Sanitizing System

The FROG Serene Floating System Fresh Mineral Water hot tub system utilizes mineral and bromine cartridges designed to destroy bacteria, reduce bromine use by up to 50% and improve the overall quality of hot tub water. The minerals last up to four full months, while the bromine can be dialed in to meet your precise needs, usually about three weeks per cartridge. Just snap the two cartridges into the floating cap and relax! Includes: -1 Bromine and 1 Mineral Cartridge -10 Frog Test Strips -Frog Jump Start Shock Directions 1. Fill Spa with fresh water and bring spa to desired temperature 2. Balance the waters pH and total alkalinity and shock the spa to establish a chlorine or bromine residual of 1-2 ppm 3. Adjust Your Cartridges:  For the Blue Spa Frog Mineral Cartridge-set wide open on setting number 6 4. For the Yellow Spa Frog Bromine Cartridge-set the cartridge to number 5 for the first 24 hours only. Then adjust down to maintain a low 1-2 ppm of bromine. That's up to 50% less brom