AmmoniaAlert, by Seachem

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 Innovative color-coded monitoring device for continuous detection of toxic ammonia. Seachem Ammonia Alert Device alerts you to high levels of free ammonia without need for a test kit. The sensor changes color from yellow to green to blue when ammonia levels increase in your aquarium. Detects less than 0.05 mg/L free ammonia and alerts you to this #1 killer of tropical aquarium fish. Inconspicuous and attaches directly to inside glass with included suction cup. Lasts for over a year before sensor needs replacement. For fresh or saltwater aquariums. More Information InterpretationAs 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, t