The Trident NP Reagent Kit is tailored for the Trident Water Analyzer to deliver accurate nitrate and phosphate testing over a two-month period. This kit includes all necessary reagents to keep your Trident running smoothly, allowing continuous monitoring of nutrient levels in your aquarium. By simplifying the process of nutrient management, this reagent kit helps aquarists maintain a balanced and healthy marine ecosystem with ease. This reagent kit comes in a two-month supply.