NT LABS Aquarium Water Mini Test (3in1 Test Kit)
When to use?
The key to successful fish keeping is excellent water quality. The Aquarium Water Mini tests three water parameters: pH, Nitrite and Ammonia.
Ammonia
Ammonia is excreted by fish as a waste product. It is extremely toxic to fish, and is broken down into less toxic nitrite by the beneficial bacteria in the filter of your aquarium.
Nitrite
Nitrite is produced by the beneficial bacteria in the pond and filters as they break down harmful ammonia excreted by fish. Although not as toxic as ammonia, nitrite is still very damaging to the health of the fish. Nitrite itself is broken down into nitrate which is significantly less harmful to fish.
pH
pH measures the acidity or alkalinity of the water. A stable pH is essential for fish health and compatibility with tank inhabitants.
| Parameter | Test Method | Frequency |
|---|---|---|
| Ammonia | Color change in test strip | Weekly or after fish addition |
| Nitrite | Color change in test strip | Weekly or after fish addition |
| pH | Color change in test strip | Monthly or when water changes |
FAQ
How accurate are the test results?
The test results are accurate within the standard range for home aquariums when used according to instructions.
Can this test kit be used for both freshwater and saltwater aquariums?
This test kit is designed for freshwater aquariums only.
How long does the test strip last after opening?
The test strips are stable for up to 12 months from the date of manufacture when stored in a dry, cool place.

Michael Hudson –
Easy to use and gives clear results. I tested pH, ammonia, and nitrite weekly and noticed a quick improvement in water quality after adjusting the filter. The color changes are very visible and the kit fits well in my small tank setup.
Isaac Short –
Good value for the three parameters tested. I found the instructions straightforward and the strips don’t fade during testing. It’s helpful to monitor ammonia levels, which I didn’t catch before using this kit.
Phil Black –
I’ve used this kit for three months now and it’s become a regular part of my aquarium maintenance. The test strips are reliable and the results help me catch issues early. No false positives or negatives reported.