King Technology 01-03-7842 Frog Leap Chlorine Torpedo Pac Frog leap torpedo Pac comes pre-filled with chlorine tablets Easily inserts into the anti-back mineral Pac Dispensing low levels of chlorine for up to 3 weeks With precise feeding chlorine lasts 2 times longer as you only need a 0.5-1.0 PPM level The handles are easy to remove