Ammonia Alert® is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration. No test kits, chemicals, or procedures are needed. The device detects less than 0.05 mg/L (ppm) free ammonia and alerts you to the #1 killer before any sign of stress. It lasts over a year. Marine or freshwater use.
- Brand: Seachem
- Manufacturer: Seachem
- Manufacturer Part Number: 00CLHMDELJB7UU0
- Assembled Product Weight: 1 oz
- Assembled Product Dimensions (L x W x H): 6.00 x 4.00 x 6.00 Inches








Aurelia Lehner –
Works great to detect changes in ammonia levels. However, it can be deceiving as it read my levels as normal yet my fish were staying close to the bottom of the aquarium. While having only the tank light on, it read normal, but once I switched on the room light to get a better look, I could see the color was actually in the alert stage and was able to reduce the levels with a 50% water change. Well worth the money and saves you the hassle of testing the water with the test kit.
Dr. Dameon Runte PhD –
I like having peace of mind when I look at my tank knowing my fish are safe. This product couldn’t be easier to use.
Anissa Hammes PhD –
It says 3 ct. Was expecting 3 in total but only got 1.