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Old 02/08/2018, 10:21 PM   #1
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Join Date: May 2016
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Confusing ammonia readings

I have 60gal with 65lbs cured LR from a reef tear down. It’s been up for about a week and I added a 1” maroon clown and a 1.5” samsmara squirrel fish 2 days ago. I was told that since the rock was cycled that I wouldn’t get much of a cycle and I could start stocking the tank. I put a sea chem alert in and it consistently reads safe,but when I use my API test, it reads about .25. I heard that API can give false positives, so which of the tests should I believe?

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Old 02/08/2018, 10:39 PM   #2
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Forgot to mention that I also tested my freshwater tank with the API and it read 0

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Old 02/08/2018, 11:46 PM   #3
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Neither, get a Salifert ammonia test kit. You are correct that the API test kit frequently shows a false 0.25 positive test result, the Sea Chem alert just isn't very accurate.

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Old 02/09/2018, 02:42 AM   #4
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It's probable what you are seeing is a false positive on the API. I find it is more sensitive to the light you are using to read the test kit. What looks like .25 indoors can look like 0 in the sun.

You may have a little bit of a cycle, especially if you didn't transport the rock in water. If that is the case it should go away quickly.

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