Prime Members: 12-Pk 1-Lb HTH Pool Care Shock Advanced Chemical $36.15 + Free S&H

Amazon has 12 pack HTH 52037R Pool Care Shock Advanced, Swimming Pool Chemical - Cal Hypo Formula for $36.16. Shipping is free. https://www.amazon.com/dp/B09R82X1S5?th=1 *QA note: requires...