API Fresh Water Salt Water Nitrate Test Kit
Nitrate Test Kit
API has been an industry leader in fish care, nutrition, treatments, testing and pond products for over 50 years, giving them a keen insight into your aquarium and its needs – making them the clear choice for fish enthusiasts around the world.
Taking a little bit of time each week to test and adjust your aquarium water will make a world of difference for your fish. API’s nitrate test kit allows you to test for nitrate, which can build up in your tank via organic and fish waste and contribute to poor water quality (and therefore, unhappy fish!). This accurate, easy to use kit contains two bottles of liquid test reagent, two laminated, computer-calibrated colour cards, and a glass test tube.
| Component | Quantity |
|---|---|
| Liquid Test Reagent | 2 bottles |
| Colour Cards | 2 laminated, computer-calibrated cards |
| Test Tube | 1 glass test tube |
FAQ
How do I use the nitrate test kit?
Add the liquid reagent to the test tube according to the instructions, then mix with a small sample of aquarium water. Compare the resulting colour to the colour card to determine the nitrate level.
Is this kit suitable for both freshwater and saltwater tanks?
Yes, this nitrate test kit is designed for use in both freshwater and saltwater aquariums.
How often should I test my tank’s nitrate levels?
It is recommended to test nitrate levels weekly, especially during periods of high fish activity or feeding.

Deirdre Duncan –
The test kit is easy to use and gives clear results. I’ve been using it for two months now and can see a noticeable improvement in my tank’s water quality. The colour cards are accurate and the reagent doesn’t stain the test tube.
Rebecca Nash –
Works well for checking nitrate levels. The instructions are clear and the results match what I see in my tank’s water. A bit of practice is needed at first, but it’s straightforward once you get the hang of it.
Jack Peters –
I’ve used this kit for my saltwater tank and it’s reliable. The colour comparison is simple and the reagent stays stable for a long time. Great value for the accuracy it provides.