Keep your pool and spa water clean and healthy with Clorox Pool & Spa Refill Solutions 3-Way Test Kit. This kit is perfect for all water types, including fresh water, and suitable for use in hot tubs and swimming pools. The kit includes solutions for testing and treating parameters such as alkalinity/KH, salt, pH level, and chlorine, ensuring that your water remains safe and inviting for swimming. With the Clorox brand, you can trust that your water will be treated effectively and efficiently.