API REEF MASTER TEST KIT
Helps prevent invisible water problems that can be harmful to fish and cause fish loss.
Accurately monitors 4 most vital water parameters in reef aquariums: Calcium, carbonate water hardness, phosphate, and nitrate.
Designed for use in reef aquariums only.
Use for weekly monitoring and when water or fish problems appear.
| Parameter | Measurement |
|---|---|
| Calcium | mg/L |
| Carbonate Water Hardness | mg/L |
| Phosphate | ppm |
| Nitrate | ppm |
FAQ
How often should I use the API REEF MASTER TEST KIT?
Use the kit for weekly monitoring and whenever water or fish problems appear.
Which water parameters does the API REEF MASTER TEST KIT measure?
The kit measures calcium, carbonate water hardness, phosphate, and nitrate.
Is this test kit suitable for all types of aquariums?
No, this kit is designed for use in reef aquariums only.

Lillian Avery –
I’ve used this test kit for three months now and it’s been very reliable. The results are clear and easy to read. I check calcium and nitrate weekly, and it helps me catch imbalances early. My corals are thriving and my fish stay healthy.
Justin Campbell –
The kit works well for monitoring phosphate and nitrate levels. I noticed a drop in nitrate after a water change, which helped me adjust my feeding schedule. The instructions are straightforward and the test strips don’t fade quickly.
Connor Roberts –
I was worried about water quality in my reef tank, especially with new corals. This kit gave me confidence in maintaining stable parameters. The calcium and hardness readings are accurate and consistent.