NT Labs Aquarium Lab is a master test kit that has oveer 200 tests for over 6 important parameters. Using a drop test system to denote the levels in the water, it is easy and simple to use.
It contains everything that you need to test for:
- General Hardness
All testing formulas are included, test tubes, stickers, and the box has a built in stand to hold the tubes. Full instructions are included too.