This product includes five convenient 1 lb. packets of cal hypo in one box. Use them to shock treat your pool water. One pound treats 10,000 gallons of pool water. Super chlorinator for swim pools Controls algae and reduces organic contaminants in pool water Add once every two weeks in pools receiving normal usage to prevent algae Product Form Granular For Use With Pool Product Type Pool Spa Chemicals To Bulky Buyers: Contact us for discounted price on bulky purchases. Notice: More than 1 item is Bulky Purchases. Guarantee From EP Household No Ordered Products,Full refund. Notice: As the Pandemic still on,Delay in Delivery to some locations may occur. Shipping Policy: USA 1.All items are shipped to our customers via USPS or UPS. 2.Free Shipping(Economy Shipping) Limited to USA including AK,HI,PR,VI,GU ect. 2.Economy Shipping via USPS usually takes 1-5 Business Days including Saturdays. 3.Economy Shipping via UPS usually takes 1-5 Business Days excluding Saturdays. Worldwide 1.All items are shipped to our customers in other countries via USPS or UPS. 2.Contact EP Household for accurate international shipping fees. 2.Economy Shipping via USPS usually takes 1-15 Business Days including Saturdays. 3.Economy Shipping via UPS usually takes 1-15 Business Days excluding Saturdays. Disclaimers: 1.EP Household has no responsibility for physical injuries,emotional injuries,and mental injuries of the buyers or the users,if the buyers or the users got hurt in use of this product; 2.Any legal cases/claims filed against EP Household must be solved and negotiated via court of arbitration,no exceptions. 3.EP Household has no responsibility for the damage and/or loss of products/items ordered from EP Household if the buyers took the privilege of FREE SHIPPING on his/her order(s). 4.Cancellation on the customers' order(s) is at the discretion of EP Household,which means Customer(s)' order(s) placed will NOT be charged from EP Household's end until EP Household makes the shipment of the customer(s)' order(s). 5.EP Household didn't,doesn't and won't make any promises on price match with other companies or businesses. 6.Photo may have been enlarged and/or enhanced.