Maintenance Program: Always make certain there are bromine tablets (recommend adding only 1 tablet at one time) in your dispenser and keep a bromine level of 4 ppm which can be reduced to 2 ppm with the regular use of Spa Activator. Simply add 2 ounces (for 1 to 2 people and an additional ½ ounce for each additional user) of Spa Activator each time after you use the spa and 2 ounces each week when spa is not in use.