The Redline High Alk Salt Mix by Fritz Aquatics is a professional-grade marine salt mix designed specifically for reef and fish-only aquariums. It offers all the essential major, minor, and trace elements found in natural seawater along with enhanced alkalinity levels to support the growth of SPS corals and other demanding marine life. This high-quality formula provides precise parameters such as salinity at 35 PPT, alkalinity between 10-12 dKH, calcium ranging from 400-450 ppm, magnesium at 1300-1400 ppm, and more, ensuring a stable and thriving marine environment. This product is ideal for advanced hobbyists who maintain high-nutrient reef systems or those looking to optimize water chemistry for optimal coral health and growth.