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Seachem Ammonia Alert
Seachem Ammonia Alert
Seachem Ammonia Alert Seachem Ammonia Alert

Seachem Ammonia Alert

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On 30 September no orders will be shipped. We are unavailable from 30.09 t/m 2.10.

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Seachem Ammonia Alert

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 about a year. This product is not recommended for use at acid pH. Marine or fresh water use.

In the absence of free ammonia the unit will assume a yellow or faint yellow-green color. It is normal for the dry sensor to have a greenish hue. It may take up to a few days for a dry sensor to equilibrate with the water. No sampling of water, chemicals, or test procedures are required. The presence of the free ammonia is detectable continuously with a response time of about 15 minutes. Response to decreasing ammonia is slower, requiring about 4 hours to go from TOXIC to SAFE on removal of ammonia.
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.

As little as 0.02 mg/L of free ammonia will produce a greenish hue on the detector surface. This corresponds to a total ammonia (both ionized and free ammonia) of 0.25 mg/L in marine water at pH 8.3. In freshwater at pH 7.0, this corresponds to 3.6 mg/L total ammonia.

Free ammonia is much more toxic than ionized ammonia. As free ammonia, the ALERT color corresponds to about 0.05 mg/L, ALARM to about 0.2 mg/L, and TOXIC to about 0.5 mg/L. Administering a water change should be considered for any indication other than SAFE. The ALERT concentration is tolerated for 3-5 days, ALARM for 1-3 days, and TOXIC is rapidly harmful, requiring immediate attention. For emergency ammonia removal, treat with AmGuard™.

No care is required beyond removing algae with a clean, soft material. Avoid touching the sensor with fingers, since skin oils can damage it. Do not use bleach, soap, detergents or hard objects to clean the sensor. Some dye medications may discolor the sensor. Sensitivity improves with age, provided the unit is not allowed to dry out, however, drying does not permanently impair the unit. For maximum sensitivity, the unit should be read under natural daylight or daylight simulating light. Red enhancing light minimizes green and blue hues, decreasing the apparent sensitivity of the unit. The response of the unit may be checked by holding it briefly over the mouth of an ammonia bottle: color should develop rapidly.


No action required


Tolerated for 3-5 days. Monitor and consider a water change soon.


Tolerated for 1-3 days. Perform a water change soon.


Perform water change or treat with AmGuard™ for emergency ammonia removal

SEA-4 100
By on  30 Aug. 2021 (Seachem Ammonia Alert) :

Noodzakelijk bij opstarten!

Ik heb mijn aquarium compleet opnieuw ingericht. Mijn filter heb ik bewust wel zo gelaten zoals het is en alleen het mechanische deel schoongemaakt.

Omdat ik Aqua soil heb gebruikt (van Tropicana en Ada), was ik bang voor ammonium pieken. Ik heb voor de zekerheid deze ammonium alert gehaald. Deze werkt ook goed icm met seachem prime.

Ik gebruik ook seachem purigen, in de hoop dat deze ook ammonium bindt.

Tot nu toe lijkt de alert goed te werken.