Seachem Ammonia Alert – 12-Month Sensor for Continuous Ammonia Monitoring

Seachem Ammonia Alert is a revolutionary, real-time ammonia monitoring device that provides peace of mind for aquarists. It uses a proprietary sensor that changes color based on the concentration of toxic free ammonia (NH₃), the most dangerous form of ammonia in aquariums.

Unlike traditional test kits, Ammonia Alert requires no water sampling, chemicals, or strips. It continuously monitors ammonia levels and displays results clearly inside the tank. The sensor is small, clear, and unobtrusive—perfect for display tanks. It lasts over 12 months and is safe for both freshwater and marine systems.

Key Features:

• Continuously detects free ammonia (NH₃) – not total ammonia
• Color-coded readings: Yellow (Safe), Green (Alert), Blue (Toxic)
• Response time: ~15 minutes for rising ammonia, ~4 hours for decreasing
• Lasts over a year – 9x longer than competing products
• Safe for all freshwater and marine aquariums

Product Specifications:

• Brand: Seachem
• Model: Ammonia Alert
• Duration: 12 months
• Monitoring Range: Detects < 0.05 mg/L (ppm) free ammonia
• Country of Origin: United States

Directions for Use:

Place the sensor visibly inside the aquarium or filter. Allow 30 minutes for initial activation. Ammonia shifts will register within 10–15 minutes. For best results, read the sensor under natural or daylight-simulating light. Do not clean with soap or abrasive materials. A greenish hue when dry is normal.