Powerful chlorine shock treatment that is great for regular maintenance Quickly eliminates algae, bacteria, and other harmful contaminants from your pool water Main active ingredient is 68% Calcium Hypochlorite (Cal-Hypo) for quick sanitizing Dosage: 1 Pound per 10,000 gallons Special Shipping Information: This product may not be available for 1 or 2 day shipping due to federal regulations that require it to ship via ground ship methods only. This product can only be shipped within the 48 contiguous states.
