API® Nitrate Test Kit — 90 Tests

API® Nitrate Test Kits quickly and accurately measure the nitrate level from 0 ppm to 160 ppm. High nitrate levels indicate a build-up of fish waste and organic compounds, resulting in poor water quality and algae growth.  Maintaining a low nitrate level improves the health of fish and invertebrates. Includes 2 bottles of test reagent, 2 color cards, glass test tube with cap, and easy-to-follow instructions For use in fresh and salt water Makes 90 tests