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Old 08-05-2020, 02:11 PM   #1
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Question 0.25ppm Ammonia help!

Hello! Today I did an Ammonia test on my 10 gallon tank and the result was light green under yellow, which is 0.25ppm. So the thing is, I want to do a water change to get it back to 0ppm, but I have a question. How much water should I take out and what does that LOOK like. Thanks.
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Old 08-05-2020, 04:38 PM   #2
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Do a 25% water change. Retest every day and if you see any ammonia do a 25% water change. Keep this up until you are consistently 0ppm.

Could i ask a few questions? Your post doesn't give much background.

Are you a novice fish keeper?

Are you currently cycling your aquariums?

Do you have your other water parameters?

If you want to see what a 0ppm ammonia test looks like, do a test on some bottled water.
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Old 08-05-2020, 07:13 PM   #3
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Your ammonia is not a problem unless your pH is around 8. What is the pH of your water?
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Old 08-05-2020, 09:29 PM   #4
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The pH of my water is 6.4.
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Old 08-05-2020, 09:32 PM   #5
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Quote:
Originally Posted by ExtremeBoss View Post
The pH of my water is 6.4.
The common aquarium “ammonia” test measures the total ammonia, both ionized and un-ionized (Total Ammonia Nitrogen or TAN).

The chronic toxicity, where the ammonia kills slowly by a variety of mechanisms, is as follows:
  • 20 to 100 ppm of ammonia TAN at a pH of 6.0
  • 2 to 10 ppm of ammonia TAN at a pH of 7.0
  • 0.2 to 1 ppm of ammonia TAN at a pH of 8.0
Any pH between the above numbers you will have to make a linear interpolation. As you can see there is a 10 times increase or decrease in toxicity between pH levels.

A pH of 6.5 will reduce the growth of beneficial bacteria by 90%. A pH of 6.0 will virtually stop beneficial bacteria from oxidizing ammonia to nitrate; hence ammonia may be on the rise.
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