3 POOL FROG® Pool Tender Chlorine Chambers come pre-filled with chlorine and easily insert into the Mineral Reservoir, dispensing low levels of chlorine for 1-3 weeks. With precise feeding, you will use up to 50%* less chlorine. The handles on the Torpedo Pacs are easy to remove and you will never have to touch messy chemicals again.
 
Only to be used with the FROG® Pool Tender Mineral Water System.