API FRESHWATER MASTER TEST KIT
Helps monitor water quality and prevent invisible water problems that can be harmful to fish and cause fish loss.
Accurately monitors 5 most vital water parameters levels in freshwater aquariums: pH, high range pH, ammonia, nitrite, nitrate.
Designed for use in freshwater aquariums only.
Use for weekly monitoring and when water or fish problems appear.
Key Parameters Monitored
| Parameter | Measurement Range |
|---|---|
| pH | 6.0 – 9.0 |
| High Range pH | 7.0 – 9.0 |
| Ammonia | 0 – 0.25 ppm |
| Nitrite | 0 – 0.5 ppm |
| Nitrate | 0 – 50 ppm |
FAQ
How often should I use the API Freshwater Master Test Kit?
Use the kit for weekly monitoring and whenever water or fish health issues appear.
Can this test kit be used in saltwater aquariums?
No, this test kit is designed for use in freshwater aquariums only.
What water parameters does the kit measure?
The kit measures pH, high range pH, ammonia, nitrite, and nitrate levels.




Emma Oliver –
I’ve used this test kit for three months now and it’s been very reliable. The color changes are easy to read and I can spot ammonia spikes early. It helps me maintain a stable environment for my betta and guppies.
Edward Lewis –
The kit is simple to use and gives clear results. I check it every week and it’s helped me catch a nitrite spike before any fish showed signs of stress.
Sean Coleman –
Great value for the parameters it tests. I appreciate the clear instructions and the fact that it covers all the essential water factors for a freshwater tank.