Salifert's pH Test Kit provides you with quick and precise test results for one of the most crucial parameters to measure in your aquarium, pH. The pH value of your aquarium can have severe ramifications, including impacting coral growth and disrupting biological processes in your fish. It's very important to keep the pH in your aquarium stable, and the only way to know for sure how stable your ecosystem is is to test the water. The Salifert pH test kit precisely monitors pH fluctuations of approx. 0.2 pH units, giving you the knowledge to issue fast and efficient corrective measures to stabilize your aquarium's alkalinity. Grants approx. 50 tests per kit and measures between the ranges of 7.4 - 8.6 pH.