Reef Essential® Bio-Metals™ is designed to provide ionic, complexed & chelated bioactive metals to help intensify green coral colour. The ionic & complexed are immediately bioavailable while the chelated delivers a sustained release helping to provide a consistent supply of bioactive metals to coral. This product must be used alongside our Reef Essential® Bio-Enhance™, Reef Essential® Bio-Gen™ & Reef Essential® Bio-Kalium™ supplements as together they will provide the required biomolecules, major, minor and trace colouring elements. If wanting to enhance coral bone growth & density we recommend our Aragonite Enhancers™. Recommended iron concentration = 0.1-0.3ppm. Contents:– Deionised water– Bioactive Metals Instructions:Shaking is not required, however, if product has been left standing for a length of time invert bottle 3-4 times before using. Directions:Add product to high water flow. This product must be used in reef aquariums and can be used on a dosing pump. Dosing:Lightly stocked = 0.50mL/100L per dayModerately stocked = 0.75mL/100L per dayHeavily stocked = 1.00mL/100L per day Or as required to maintain iron between 0.1-0.3ppm Note: 1mL/100L will raise iron by 0.01ppm, boron will increase relatively or download our FREE “Q dosing” app!