API nitrate test difference - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 4 Old 10-27-2010, 09:50 PM Thread Starter
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API nitrate test difference

I recently bought another API nitrate test because I had questions whether or not the one from my all in one kit was still reading good. Well I tested the same water with both tests and they came out exactly the same, but one difference was the cards color was a bit different. So reading form my multitest card my nitrates are at 40ppm but only 20ppm on the 1 test card. Which one do you guys think is correct?
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post #2 of 4 Old 10-28-2010, 01:18 AM
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Comparing it to mine the one on the right looks correct to me. The one on the left might be for saltwater?

150 Gallon - Mostly American Cichlids
135 Gallon - Angelfish Community
75 Gallon - Odd couple (Polleni/Angelfish)
55 Gallon - African tank
20 Gallon Long - QT
10 Gallon - Empty
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post #3 of 4 Old 10-28-2010, 04:49 AM
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The one on the right is the one i'd go by. It looks the same as what I use.

Animal testing is a terrible idea; they get all nervous and give the wrong answers.
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post #4 of 4 Old 10-28-2010, 07:18 PM Thread Starter
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Alright thanx, I will confirm that it is a freshwater card, so maybe that card was printed bad.
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