SALIFERT Nitrate NO3 Profi Test (SALNAPT)
When there are insufficient areas of a tank which are deprived of oxygen (anaerobic zones) or denitrification is not taking place properly, nitrate will build up. This can also happen in an aquarium where the biological loading on the system is causing an imbalance, for example if there is excessive livestock for the aquarium volume or overfeeding is occurring.
The build-up of nitrate can result in unwanted algae growth and the slowing down of coral growth. The nitrate concentration in a reef aquarium should be lower than 1 mg/L, although fish-only aquariums would usually have a higher concentration.
Many nitrate test kits are prone to amine interference, which can make nitrate levels appear falsely elevated.
Test Accuracy and Use
| Parameter | Value |
|---|---|
| Test Type | Nitrate (NO3) Detection |
| Detection Range | 0 – 50 mg/L |
| Test Method | Colorimetric |
| Kit Components | Test solution, reagent, color chart |
FAQ
Can this test kit detect nitrate accurately in reef aquariums?
Yes, the SALIFERT Nitrate NO3 Profi Test is designed to detect nitrate levels accurately in reef aquariums, with a detection range up to 50 mg/L. It is recommended for use when nitrate levels exceed 1 mg/L, which is the target threshold for reef systems.
Does this test kit work in fish-only aquariums?
Yes, it can be used in fish-only aquariums as well, though nitrate levels in such systems are typically higher than in reef tanks.
Is there interference from other substances in the water?
Please contact customer service for information on specific amine interference or other potential chemical interferences.



Diana Edmunds –
This test kit is reliable and easy to use. I’ve used it regularly in my reef tank and can consistently see nitrate levels staying below 1 mg/L. The color change is clear and matches the chart well. No false readings so far, even after several months of use.
Stephanie Mackay –
Good for monitoring nitrate, though I noticed the color chart can be hard to read in low light. Still, it’s accurate and helps me adjust feeding and water changes. Works well with my existing water testing routine.
John Forsyth –
I’ve been using this test for over six months. It’s consistent and shows real nitrate levels. I use it weekly to maintain a healthy reef environment. No issues with interference or accuracy.