Sirona Spa Care Activate Granular 5 lb 2 multi port top mount 6 way Pool Shape Rectangle Including Extension Size:LP Pool Shape Rectangle Including Extension Pool Size 15' x 30' Rectangle + 4' x 8' Center End Step Shipping Info Usually Ships in 7 10 Business Days Warranty 15 Year Manufacturer Warranty Product Features The polyester bonded thread used in LOOP LOC covers costs almost 10 times more than that used by some of our competitors it's patented Can also be used as shock oxidizer with other bromine or chlorine systems this product "activates" Enhance Bromide Salt Solution into a bromine sanitizer and works as a shock oxidizer to destroy organic contaminants such as cosmetics