HTH Pool Care Algae Guard, 1 qt helps keep your pool water clear, clean, and free of algae with two powerful formula options.
The Advanced Algaecide is a fast-acting, non-foaming formula that kills and prevents heavy green, black, and mustard algae blooms. It can be added directly to pool water, allowing swimmers to re-enter quickly, and is ideal for weekly maintenance in all pool types, including vinyl-lined and saltwater systems.
The Ultra Algaecide offers long-lasting protection, killing and preventing all types of algae while helping stop regrowth for up to 3 months. This strongest formula is also non-foaming, non-staining, and compatible with all pools. For best results, it is typically used as part of a quarterly maintenance routine alongside HTH Shock products.
