How much shock for 27 foot above ground pool to open for summer?

To open a 27-foot above-ground pool for summer, you typically need to shock it with 1-3 pounds of chlorine shock per 10,000 gallons of water. Since a 27-foot pool holds approximately 14,000 to 15,000 gallons, you would use approximately 1.5 to 4.5 pounds of chlorine shock depending on the water's condition. Always check the pool's chemical levels first and follow the manufacturer's instructions for the specific shock product you are using. After shocking, wait for the chlorine levels to drop to safe levels before swimming.