JBL PROAQUATEST NH4 Ammonium – Essential Test for New & Established Aquariums
Track one of the most critical parameters in fishkeeping with the JBL PROAQUATEST NH4 Ammonium kit. Ideal for cycling tanks and routine checks, this liquid test helps you monitor ammonium (NH4+) in freshwater and marine aquariums, giving early warning of filtration issues and protecting fish health.
Why test ammonium?
- Early problem detection: Elevated NH4 can signal overfeeding, filter problems, or a new-tank cycle.
- Fish safety: In certain pH conditions, ammonium can convert to toxic free ammonia (NH3).
- Supports the nitrogen cycle: Regular checks help verify biological filtration performance.
Key features
- Fast, clear readings via an intuitive colour comparison chart.
- Great for cycling tanks and after stocking or maintenance changes.
- Multiple tests per kit for cost-effective routine monitoring.
- Freshwater & marine compatible.
What’s included
- Liquid reagents for NH4 determination
- Test vial / cuvette with cap
- Colour comparison card
- Measuring accessories (e.g., syringe or spoon)
- User instructions
How to use (quick guide)
- Rinse the vial with sample water and fill to the mark.
- Add the indicated drops of each reagent as directed.
- Cap, mix gently, and wait for the stated reaction time.
- Compare the colour to the chart under neutral light to read NH4.
- Log results and adjust feeding/filtration as needed.
Pro tips
- Test during cycling: Check NH4 frequently until ammonia and nitrite remain at zero.
- Pair with pH: Use a pH reading to understand potential NH3 toxicity risk.
- Reduce ammonium sources: Avoid overfeeding and keep filters clean and properly seeded.
- Water changes: Perform partial changes if NH4 rises above your safe range.
FAQs
Is this test suitable for saltwater?
Yes, it can be used in both freshwater and marine aquariums.
How often should I test?
During cycling or after major changes, test every 1–2 days; otherwise, weekly is a good routine.
What if I detect ammonium?
Review feeding, check filter function, and consider partial water changes. Also verify nitrite and nitrate to assess the nitrogen cycle.
With JBL PROAQUATEST NH4 Ammonium, you get quick, reliable readings to keep your aquarium safe and stable.


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