How much can you change nitrate per day - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 07-07-2016, 07:42 AM Thread Starter
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How much can you change nitrate per day

Hey guys, this is my first post in any kind of forum. I can usually find my answers in other peoples questions, but not this time. I'm not extremely knowledgeable when it comes to plants and chemistry. My nitrates have been at zero for the last couple years. I have some KNO3 and I want to raise my nitrates to around 20 ppm. Is there a certain amount you want to change your nitrates in terms of PPM per day? I hope I posted in the right place and haven't made a fool of myself... yet
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post #2 of 5 (permalink) Old 07-07-2016, 08:09 AM
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Hey dsamhoward , welcome to the forum.

You can raise NO3 from 0 to 20ppm in one go with no problems. Same for most of the other nutrients needed.

Gradual changes are recommended when you have fish in the aquarium and change the temperature, KH (CO3) and gh ( Ca, Mg).

Feel free to ask any questions on this forum.

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post #3 of 5 (permalink) Old 07-07-2016, 06:47 PM Thread Starter
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That's very nice to know. Thank you so much for the info, and thanks for your warm welcome too. This website is such a valuable tool!
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post #4 of 5 (permalink) Old 07-08-2016, 05:53 PM
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I would advise such a sudden increase. In general it is best to avoid sudden changes in a planted tank, as this can disrupt the balance and lead to issues. In this instance, your plants have been living with low nitrate levels for a while and likely don't have the enzymes and such to immediately start processing such a high concentration, so some may remain unused and in the water column, which in turn increases the likelihood of algae. It is best to always make changes slowly, to allow your plants to adjust.

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post #5 of 5 (permalink) Old 07-08-2016, 06:01 PM
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Rex Grigs wrote on his blog,"If your level is zero, and you add enough in one dose to raise it to 10ppm, you will kill fish. Mix 30 ml (3 tsp or 1 Tbs) into 1 cup of water. 1ml = 1.08 ppm of NO3 in 10g of water."
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