If you buy 3 or more (up to 1000), the price will be $22.99 each.
Drop the spa purifier into your spa filter cartridge and get a dramatic improvement in water quality. Using copper and silver to destroy microorganisms, the Nature 2 stick purifies the water to drinking water standards. Reduces chlorine demand by 80%. Not to be used with bromine, sodium bromide, or biguanide chemicals. Lasts up to 4 months. Measurements : 1 1/4" W x 6 3/8" H with a total height with the two extension tubes 16 " .