HELP! Cycled tank - nitrate drops to 0! - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 05-03-2012, 06:38 PM Thread Starter
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HELP! Cycled tank - nitrate drops to 0!

Hi Everyone,

I'm battling with my first 10gallon planted, dirted, freshwater aquarium. Ups and downs, ups and downs. I need some help with my water.

So, my tank has been cycled for about a month, we have lots of plants- a crazy amount of swords spawning more and more, 3 crypts, java moss, tons of anarchist, 3 anubias... etc. We also have driftwood.

We added 7 neon tetras about a week ago, we also have some pond/lung snails.

Water tests have been done on a daily basis since we added the fish. We did a 30% water change last Friday. Everything seemed fine until yesterday, our nitrate level read 0 (nitrite 0, ammonia 0, pH 7).

What's happening? Has our nitrogen cycle crashed? Are my fish in danger?

Thanks for anyone's input!
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post #2 of 7 (permalink) Old 05-03-2012, 06:51 PM
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your plants use nitrates to grow. Add some KNO3 (potassium nitrate) Shoot for 20ppm.


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post #3 of 7 (permalink) Old 05-03-2012, 07:00 PM
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No reason to worry, plants eat nitrate. They need the macro nutrients; nitrogen, potassium, and phosphorous. And a host of micro nutrients as well. Read into Estimative Index dosing. If you don't have enough nutrients it can lead to algae.
Your fish will do fine with no nitrate, its too much u should be worried about
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post #4 of 7 (permalink) Old 05-03-2012, 07:03 PM
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Buy Seachem Nitrogen (N) I dose a capful DAILY

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Just because its dirt doesn't make it low Tech
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post #5 of 7 (permalink) Old 05-04-2012, 07:39 AM
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Quote:
Originally Posted by JasonG75 View Post
Buy Seachem Nitrogen
Seachem nitrogen is cheapest here. There is also a dry form here. Information on how to dose it here, for it has to be diluted. Thus will last longer than seachems.

Once I accidentally overfed my fish and the nitrates went up from 0 to 40.
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post #6 of 7 (permalink) Old 05-04-2012, 07:55 AM
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For fish.. you want Nitrates to be at 0. As mentioned already plants eat Nitrates so dont be surprised if is at 0 frequently. Honestly I wouldn't even worry about it. Would love to see pictures of your tank.
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post #7 of 7 (permalink) Old 05-04-2012, 03:07 PM
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When I had zero nitrate I also had an epic case of green water, couldn't see but an inch into the tank. You definitely want nitrate! 10-20ppm or so.

But..... you might redo the test remembering to shake the second bottle and the test tube exactly as directed. The second bottle has crystals that sink to the bottom that need to be dissolved. It is very unlikely the tank hasn't any nitrate considering this is a dirted tank.


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