Heone Fish Water Test Kit NH3/NH4

Testing NH₃/NH₄ (ammonia/ammonium) is crucial because it shows whether harmful waste is building up in your aquarium.

Ammonia is produced from fish waste, uneaten food, and decaying matter. In its toxic form (NH₃), even small amounts can quickly harm or kill fish.

It helps you:

• Detect dangerous waste buildup early
• Prevent fish stress, gill damage, and poisoning
• Monitor if your filter and beneficial bacteria are working properly
• Avoid “new tank syndrome” during cycling
• Keep water safe and stable for fish health

In short, any detectable ammonia is a warning sign, and keeping it at zero is essential for a healthy aquarium.