Pool Mate Jumbo Tabs are the strongest chlorine tablets available. Each 3" 8 oz. tab is individually wrapped, stabilized, and slow dissolving. The tabs are wrapped to make handling safer and easier. These chlorine tabs are stabilized to protect against harmful UV rays, improving the chlorine residual in your pool. Pool Mate 3" Jumbo Tabs are the slowest dissolving tabs available. Customers prefer Pool Mate Jumbo Tabs because they are the longest lasting chlorine tablets available. The initial startup and weekly maintenance dosage is 1 to 3 tablets per 10,000 gallons, although this dosage may vary due to unusual conditions such as heavy bather loads, wind, heavy rains, and high temperature. Adjust the chlorine dispensing rate of the floater or in-line feeder to provide 2.0-4.0 ppm of free chlorine residual. Maintain pH at 7.4-7.6 and total alkalinity at 80-130 ppm. 90% available chlorine.