Preserve your pool water during the winter months with this effective treatment. Instead of draining all the water, this treatment can help keep the water in good condition. It's easy to start in the spring and ensures you don't have to add water again. Combine this product with BSI Cristal Clear and HTH Fast Release Chlorine for optimal results. Follow the instructions for use to apply the products correctly. Product Specifications: - Preserves pool water during the winter months - Easy to start in the spring - Combine with BSI Cristal Clear and HTH Fast Release Chlorine for best results - Follow the instructions for use for correct use - No mention of stores where the product is available - No mention of delivery times