The API® REEF MASTER TEST KIT tests 4 key parameters - Calcium, Carbonate Hardness, Phosphate, and Nitrate - to maintain the health of coral reef inhabitants. The test is fast, easy, and accurate, providing precise results, and comes with 4 glass test tubes with tight-fitting caps and a convenient storage tool for easy reusable storage. This kit also includes a complete step-by-step instruction booklet with a color chart that provides information on how to correct unsafe water conditions.

We recommend taking a few minutes each week to monitor your aquarium conditions and create a better aquatic world for your fish. Testing aquarium water has never been this easy or accurate before!

Contains 7 Fluids test kits, easy-to-read instructions, 4 glass test tubes, and a color chart.