API Reef Master Test Kit
The API Reef Master Test Kit tests 4 key parameters – calcium, carbonate hardness, phosphate, and nitrate – to keep reef inhabitants healthy. Testing is fast, easy, and accurate, yielding precise results. The kit comes with 4 glass test tubes with snap-tight caps and a convenient holding tub for easy, reusable storage. It also includes a complete, step-by-step instructional booklet with a color chart that provides information on how to correct unsafe water conditions.
SIZE:
| Item | Quantity |
|---|---|
| Test solutions | 7 |
| Test tubes | 4 |
| Instructional booklet | 1 |
| Holding tub | 1 |
FAQ
How often should I test my aquarium water?
We recommend testing your aquarium water a few times each week to monitor water conditions and maintain a healthy environment for your reef inhabitants.
Can this test kit detect pH levels?
No, this kit does not test pH. It measures calcium, carbonate hardness, phosphate, and nitrate only.
Are the test tubes reusable?
Yes, the glass test tubes are reusable and can be cleaned and stored in the provided holding tub.

Nicholas Gill –
This test kit is very easy to use. I followed the instructions and got clear results within minutes. The color chart in the booklet helped me understand what levels to adjust. I’ve been using it weekly and my reef has stayed stable.
Adrian Peake –
The test tubes are sturdy and the instructions are clear. I found the color chart very helpful. It took me less than 10 minutes to complete each test. My water parameters have improved since I started using this kit.
David Lee –
I’ve had a reef for over a year and this is the first test kit that gave me accurate results. The booklet is well organized and the test solutions are easy to mix. I now check my water weekly and it’s made a big difference.