Anyone else have this problem--nitrates? - Tropical Fish Keeping - Aquarium fish care and resources

 
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post #1 of 5 Old 06-16-2013, 07:43 PM Thread Starter
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Anyone else have this problem--nitrates?

I am a woman who can detect color! So why do I have such a problem seeing the difference between 10 and 20 nitrates on the liquid API nitrate test? I know men are often known to be a bit color blind, especially witb blues and greens and reds, oranges and yellows, so I don't see how in the world anyone can get an accurate reading with this nitrate test! The 10 does appear just a touch more orange-y than the 20, which is a touch redder, but still, when I hold the test tube up, it's so close.... Anyone else have this problem? I'd like to have an accurate reading!

10 gallon- 8 Harlequin Rasboras, 1 female betta.

20 gallonH - 1 Peacock Gudgeon, 2 Skunk Cories, 1 Sparkling Gourami. , one male betta, 2 nerite snails.

55 gallon - 3 Turquoise Rainbows, 1 Boesemani Rainbow, 2 Australian Rainbow, 4 Gold Dust mollies, 1 L. Dorsigera, 2 White Cloud Mountain Minnows, 1 Honey Gourami, 3 Cherry barb, 1 Koi Angelfish, 4 female betta.
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post #2 of 5 Old 06-17-2013, 07:29 AM
Yep, 10 and 20ppm are very close on the API color chart. Then again, for our purposes, we really don't need an exact decimal measure. Although we'd like nitrates as low as possible, even at 20ppm, things are okay.

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Originally Posted by RackinRocky View Post
I am a woman who can detect color! So why do I have such a problem seeing the difference between 10 and 20 nitrates on the liquid API nitrate test? I know men are often known to be a bit color blind, especially witb blues and greens and reds, oranges and yellows, so I don't see how in the world anyone can get an accurate reading with this nitrate test! The 10 does appear just a touch more orange-y than the 20, which is a touch redder, but still, when I hold the test tube up, it's so close.... Anyone else have this problem? I'd like to have an accurate reading!

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post #3 of 5 Old 06-17-2013, 09:25 AM
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Quote:
Originally Posted by RackinRocky View Post
I am a woman who can detect color! So why do I have such a problem seeing the difference between 10 and 20 nitrates on the liquid API nitrate test? I know men are often known to be a bit color blind, especially witb blues and greens and reds, oranges and yellows, so I don't see how in the world anyone can get an accurate reading with this nitrate test! The 10 does appear just a touch more orange-y than the 20, which is a touch redder, but still, when I hold the test tube up, it's so close.... Anyone else have this problem? I'd like to have an accurate reading!

Very common problem. I especially have trouble seing differences once the test gets into the red (~80PPM or so).

maintain Fw and marine system with a strong emphasis on balanced, stabilized system that as much as possible are self substaning.

have maintained FW systems for up to 9 years with descendants from original fish and marine aquariums for up to 8 years.

With no water changes, untreated tap water, inexpensive lighting by first starting the tank with live plants (FW) or macro algae( marine)

see: http://www.tropicalfishkeeping.com/a...-build-295530/
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post #4 of 5 Old 06-17-2013, 11:03 AM
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My max is between 5 or 10 so it's easier to discern the difference. Try using a white LED light (flashlight or something similar) if you can't do the test and read the results in bright, but not necessarily direct sunlight.

Jeff.


Total years fish keeping experience: 7 months, can't start counting in years for a while yet.

The shotgun approach to a planted tank with an LED fixture

Small scale nitrogen cycle with a jar, water and fish food; no substrate, filter etc
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post #5 of 5 Old 06-17-2013, 12:35 PM
You are not alone. I'm male. I have problems with almost all of the API colors.

I think Jeff is the most logical in interpretation of the test data.
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