Ortex Slow Tabs are 5 1/3 oz. 7 day 3" Chlorine tablets for weekly chlorination of your swimming pool. 1 tablet treats up to 5,000 gallons of water weekly.

Ortex Slow Tabs are 5 1/3 oz. 7 day 3" Chlorine tablets for weekly chlorination of your swimming pool. 1 tablet treats up to 5,000 gallons of water weekly.