Seachem Ammonia Alert® | Continuous Free Ammonia Monitor for Freshwater & Marine Aquariums

Protect your fish with Seachem Ammonia Alert®, an innovative in-tank sensor that continuously monitors toxic free ammonia (NH₃) 24/7. Unlike traditional test kits, Ammonia Alert provides constant real-time monitoring without the need for chemicals, testing procedures, or water sampling.

Simply place the sensor inside your aquarium or filter and instantly monitor ammonia levels through its easy-to-read color-changing display.

Key Features

✔ Continuously monitors toxic free ammonia (NH₃)

✔ No test kits, reagents, or chemicals required

✔ Detects free ammonia levels below 0.05 ppm

✔ Suitable for freshwater and marine aquariums

✔ Reusable sensor lasts over 1 year

✔ Compact, clear, and unobtrusive design

✔ Easy visual color indicator

How It Works

The sensor changes color according to free ammonia concentration:

🟡 Yellow – SAFE

🟢 Green – ALERT

🔵 Blue – TOXIC

This allows you to identify dangerous ammonia levels before fish show signs of stress.

Benefits

• Provides continuous 24/7 monitoring
• Detects the most toxic form of ammonia (free ammonia)
• Helps prevent fish loss from ammonia spikes
• No maintenance or testing procedures required
• More convenient than traditional liquid test kits

Specifications

• Brand: Seachem
• Product Type: Continuous Ammonia Monitor
• Detection Range: Below 0.05 ppm free ammonia
• Response Time: Approximately 15 minutes
• Sensor Lifespan: Over 1 year
• Suitable For: Freshwater & Marine Aquariums

Important Notes

• Not recommended for use in acidic pH conditions.
• A new or dry sensor may appear slightly green before installation.
• Initial equilibration may take a few days after placement in the aquarium.
• Response to decreasing ammonia levels may take up to 4 hours.

Package Includes

• 1 x Seachem Ammonia Alert® Sensor

Ideal for community tanks, planted aquariums, shrimp tanks, breeding tanks, quarantine tanks, and marine aquariums.