Waterbox Test Kit Bundle Maintain a healthy, thriving reef with the Waterbox Test Kit Bundle. This complete testing solution includes our Alkalinity, Calcium, and Magnesium Test Kits—the three essential parameters every reef keeper should monitor to support coral growth, vibrant coloration, and long-term aquarium stability. Designed for accuracy and ease of use, each kit utilizes a precision titration method to deliver reliable, repeatable results. This gives you the confidence to make informed dosing decisions and maintain optimal water chemistry. Whether you are caring for a mixed reef or an SPS-dominant aquarium, this bundle provides everything you need to establish a consistent testing routine while offering added value over purchasing each kit individually. Bundle Includes Alkalinity Test Kit – Measures carbonate hardness (dKH) to help maintain stable pH and support coral health. Calcium Test Kit – Measures calcium levels essential for coral skeleton development and calcification. Magnesium Test Kit – Measures magnesium concentration to help stabilize calcium and alkalinity while supporting healthy coral development. Features Complete reef chemistry testing bundle Accurate titration-based testing method Fast, reliable, and repeatable results Ideal for saltwater reef aquariums Supports informed dosing and long-term reef stability Added value compared to purchasing each kit separately Recommended Parameters Alkalinity: 7.5–9.5 dKH Calcium: 420–460 ppm Magnesium: 1,200–1,400 ppm Everything you need to monitor the foundation of a healthy reef—all in one bundle.