With the Hanna Ultra Low Range Phosphate Colorimeter Checker, you won't have to worry about the subjectivity of color charts. The Hanna colorimeter eliminates the effort of matching to a color chart by delivering a direct copper result digitally.

Excessive phosphate levels can prevent calcification, skeletal formation, and growth of many coral species, particularly those referred to as SPS or small-polyp 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. Testing for phosphates is standard practice for saltwater aquariums and provides valuable insight into your reef tank’s water chemistry to help ensure long-term coral health.

It comes with the reagent. You can buy more Hanna Ultra Low Range Phosphate Colorimeter Checker Reagent.

• Includes: 1x Hanna HI774 Checker; 2x Testing Cuvettes; HI774-25 Reagents; 1x Instruction Card
• Range: 0.00 to 0.90 ppm. Resolution: 0.01 ppm. Accuracy: ±.02 ppm ±5% of reading.
• Battery - 1.5V AAA (included)
• Auto-Off - After 10 minutes of non-use
• Dimensions - 3.2" x 2.4" x 1.5"
• Simple, one-button operation makes getting your phosphate results a snap.
• Quickly get your results without using a color chart.

Note: We can not ship this Test Kit expedited or to Hawaii, Alaska or Puerto Rico