High Nitrates in new planted tank - The Planted Tank Forum
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post #1 of 7 (permalink) Old 08-07-2016, 06:31 PM Thread Starter
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High Nitrates in new planted tank

I have a 12 gallon long which is heavily planted (pretty much out of space for anymore).

I am using ADA aquasoil Amazonia, very high light, CO2, pps pro ferts (dosing daily according to green leaf aquariums recommended for high light/co2), and a daily does of excell.

I am using distilled water (0 tds) and reconsituting with slaty shrimp gh/kh.

PH: 6-6.4
Ammonia: 1-2ppm
Nitrites: 0
Nitrates: 40pmm
Tds:150-170

All of my plants have been thriving. I purchased all of them online and except for two of them all came from tissue culture.

I had read that my ammonia would be high, followed by higher levels of nitrites, and then nitrates as the bacterial colonies develop and the tank cycles.

As I said the plants are growing unexpectedly fast. Also all of the plants that have the potential to be red are quickly changing color. I also have 0 algae so far.

I used plain distilled water for top offs. And a 40-50% water change each week.

I'm not too worried about it since everything is going so well, just very curious as to why my nitrates would be so high in a new tank.

I also tested the distilled water, it came up 0 in nitrates.

And before someone says it the water does not contain any copper. Most distilled water does not use copper pipes anymore as glass is a cheaper alternative.
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post #2 of 7 (permalink) Old 08-07-2016, 08:54 PM
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Plants have to 'work' to process nitrates....I could be wrong, but I'm guessing that your dosing is such they just don't need the nitrates.

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post #3 of 7 (permalink) Old 08-10-2016, 07:19 PM
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Your Nitrate is not insanely high. You'll reign it in with time. You don't need to dose KNO3 for the time being. Add a little more K2SO4 or KCL to make up for the lost K in the KNO3. I think this is an indication that your tank has cycled.
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post #4 of 7 (permalink) Old 08-10-2016, 07:23 PM
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I have approx 40ppm Nitrates in my tank. Hasnt caused me any problems! Track it over time, see what it does!
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post #5 of 7 (permalink) Old 08-11-2016, 09:37 PM
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How new/old is this setup?

You're adding nitrates by dosing fertilizers. If this is an established tank; I'd guess you're dosing more than whats really required for this setup.

I think the better questions to be asking are why are you using distilled water? Why are you injecting co2 and dosing excel? Why are you doing such large weekly water changes when dosing PPS?

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post #6 of 7 (permalink) Old 08-19-2016, 01:52 AM
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I would think that your tank is already cycled if those are your readings.

Perhaps someone else can correct me, but the recommended ppm for Nitrate is around 20-30 for the type of tank you have?

On a side note, I would love to see what the tank looks like.
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post #7 of 7 (permalink) Old 08-19-2016, 03:32 AM
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Quote:
Originally Posted by Aenglaan View Post
I would think that your tank is already cycled if those are your readings.

Perhaps someone else can correct me, but the recommended ppm for Nitrate is around 20-30 for the type of tank you have?

On a side note, I would love to see what the tank looks like.
No, the tank isn't cycled. They have 1-2 ppm ammonia (!!) and the nitrates are coming from the fertilizers they're dosing, not from nitrifying bacteria. It seems like they're in just the first stages of the cycle, as there aren't any nitrites.
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