The HTH Spa Clarifier is a must-have for any spa or hot tub owner. This concentrated formula helps to bring crystal clarity back to dull water, ensuring a more relaxing soaking experience. The strong cleanser is formulated to improve performance and raise filter efficiency, keeping your water clean and clear. HTH Spa Clarifier is compatible with all spas, including those that use bromine, chlorine, and biguanide systems. For best results, use HTH Spa Clarifier as part of your regular HTH Spa care routine. With HTH, you're all clear and ready to relax in your spa or hot tub!