BioGuard Arctic Blue Swimming Pool Winterizing Kit is a premium off-season kit for your swimming pool. Each kit contains Arctic Blue Algae Protector, Arctic Blue Shock, and instructions for winterizing your pool. Arctic Blue Algae Protector prevents the growth of all types of algae and is approved for use with all pool filter types. Arctic Blue Shock oxidizes and clarifies the pool water through the off-season and is ideal for all types of pool surfaces. Using the Arctic Blue Winter Kit in the off-season will make opening your pool in the spring so much easier. Available in 2 sizes to treat pools up to 12,000 gallons and 24,000 gallons.<br><br> Arctic Blue Winter Kit 24 for up to 24,000-gallon pool includes:<br><br> Arctic Blue Shock (4 lb)<br> Arctic Blue Algae Protector (1 pt)<br> Valuable coupons