Hanna Instruments Marine Phosphate Ultra Low Range Colorimeter – Checker HI774.

The HI774 Ultra Low Range Phosphate Checker HC (Handheld Colorimeteris a costeffective way to measure phosphate in marine systems, including reef tanks. Testing for phosphates is standard practice for saltwater aquariums and provides valuable insight into your reef tanks water chemistry to help ensure longterm coral health. Phosphates are one of the many forms of phosphorus compounds found in marine waters. Excessive phosphate levels can prevent calcification, skeletal formation, and growth of many coral species, particularly those referred to as SPS or smallpolyp stony. In addition, high phosphate levels can cause nuisance algae growth in your reef tank. This can become problematic because algae often outcompetes sessile organisms for light, nutrients, and space, jeopardizing long term coral health in your reef.