Hotspring Hotub Hot Tub Year's Supply Spa Mineral Ion Cartridge Sticks (2-Pack)

Pool Minerals Ion Cartridge Filter Sticks Brings Fresh and Crystal Clean Spring Spa Water to Your Hot TubFEATURES Capacity per spa mineral cartridge treats 1321 gallons and lasts 6 months Less time maintaining,more time relaxing;enjoy the spa with a mind at ease Available for 24/7/365 flow,compatible with most maintenance products for hot tub Mineral cartridge stick will significantly improving the spa daily maintenance and saving hot tub costs Continuously keeps the hot tub superlative crystal clean,clear and fresh without high levels of heavy chemicals Mineral factors will not be affected by heat and cool,maintains clear pool,spring and hot tub during hot summer and cold winter Mineral technique protects you and your family from potentially bad-risk unknown ingredients Active ingredients are zinc and malic acid Inert ingredients are attapulgite-type clay,zeolites,zinc oxide,vitamin e,vitamin c,potassium chloride,and magnesium oxide The minimum required filter hole diameter is 1-1/2 inch;minimum required filter length is 10 inch