Leisure Time 45510A Control, Quart

This dual-action formula prevents unsightly water line film as well as stain and scale from forming around the perimeter of the spa. Contains a sequestering agent to prevent stain and scale. Start-up Instructions: Control must be added first when filling the spa. Maintenance Instructions: Control is added first during the weekly maintenance program. Compatible with Leisure Time Simple Spa Care specialty line of products and specifically designed to work in the Free biguanide system with Boost Free.