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 over a year. Marine or freshwater use.
I used this when intially cycling a tank. It NEVER registered ammonia, even as I was getting up to .5 ppm on the API tests. I did test the thing over some window cleaner and it responded immediately, but not to anything in the tank. I threw it away.
I would not put the life of my fish in the hands of this device, but it is a nice security while cycling to make sure you maybe catch a spike before your fish die. Mine did change color to like blue for a week while I was fish less cycling.
Most aquarists are too impatient to wait for this little device to adjust to their tank. Mine was a grey color for about a week and then all of the sudden the colors emerged quite visibly. Since then, the ALERT has warned me of two seperate Ammonia spikes in smaller community tanks where fish had died in hard to see places. You couldn't ask for more ease of use. Now I hope they come out with a NITRITE ALERT!
This sensor works very well... had it in my tank for over 3 months and for the past month it has read SAFE so I hope it is still working. All of my fish are doing well and I even have had two batches of fry since I installed it so it must be working. Good product
I cyceled two different tanks 55 & 10 it showed what was goin on, checked results with other tests. Negative sometimes coloer is kind of hard to tell. But if its yellow you are ok if any other color check water. helps but does not replace other tests.
This is the worst product I have bought in a long long time. I should've spent this $5 on buying a bridge from a bum on the street..becasue that would've been a better use.
Stuck this thing in the tank...didn't change color one time!! And then I test the water and my ammonia is showing .5! Luckily I checked with a different kit.or else everything would've died sooner or later.
my brother and i have been using these guys for over a year and have always found them to be dead on, even when we added some new fish and the old test bottles weren't registering anything. we now have them on most of our tanks. for now i am a believer.
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