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. This product is not recommended for use at acid pH. Marine or freshwater use.

• Seachem sensor technology
• Continuously detects and monitors free ammonia
• No test kits, chemicals, or procedures are needed; just constant readings
• Lasts over a year
• Marine and freshwater

Ammonia Alert^® lasts over 9X as long as competing products.
Ammonia Alert^® is also almost half the size of competing products. It's small, clear, and unobtrusive, so it won't detract from the view of your aquarium.

Includes 1 sensor technology card (1.5" x 2.5")