The Alert Combo™ pack combines Ammonia Alert® (1 card) and pH Alert® (1 card). Ammonia Alert® and pH Alert® are nearly half the size of competing products. At 1.5" x 2.5", they are unobtrusive, small, and clear, so they won't detract from the view of your aquarium. Simply place Ammonia Alert® and pH Alert® visibly anywhere in your aquarium or filter. It’s that easy. No chemicals or test procedures are required.
Ammonia Alert's® sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration. It detects less than 0.05 mg/L (ppm) free ammonia and alerts you to the #1 killer before any sign of stress. The presence of the free ammonia is continuously detectable 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. Freshwater or Marine use.
pH Alert® is a unique colour device designed to be placed in your filter or aquarium
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