Lightly planted fishless cycling question - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 02-24-2013, 11:28 PM Thread Starter
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Lightly planted fishless cycling question

Hello,

Looking for some advice to a new guy. I have been doing a fishless cycle on a 60gal lightly planted tank with low/medium light. It took quite some time to get things going with the ammonia sitting at about 3ppm with 0 on both Nitrates and Nitrites. I dosed the tank with Dr. Tim's One and Only, and the next day I was down to 1ppm Ammonia and 2ppm Nitrites and 5ppm Nitrates. The next day I was at 0 on the ammonia, the Nitrates were at 10, but the Nitrites were at 4. Now the tank will go through the ammonia each day, and the Nitrates are holding steady at 10ppm, but the Nitrites at the top of the API chart. After a few days of this I decided today I would do a 50% water change. Even after the water change (water conditioned with Prime) the Nitrites are still at top of chart. So I actually don't know how I the Nitrites are and was wondering what my next step should be. Do I do another water change tomorrow or let things ride?

Thanks
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post #2 of 7 (permalink) Old 02-25-2013, 12:29 AM
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How long has it been cycling? What kind of filtration are you using? Is your heater on?

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post #3 of 7 (permalink) Old 02-25-2013, 12:33 AM Thread Starter
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The tank has been cycling for two weeks. I have a new canister filter with new media, and the tank is set to 78 degrees.
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post #4 of 7 (permalink) Old 02-25-2013, 11:38 AM
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Since you don't have any animals in the tank, you shouldn't do any water changes except as directed by the Dr. Tim's bottle. You shouldn't have to do any more water changes until after ammonia and nitrite are both zero. Then do a large water change to reduce the nitrates.

Patience, patience, until ammonia and nitrite are zero. Don't clean the filter until the nitrate water change, and then clean it in the water you drained from the tank so as not to kill the bacteria in the filter media.

Find sites with articles about fishless cycling (I'm sure there are several here) and familiarize yourself with the fishless cycling process!

Hope this helps, and good luck!

Steven

MY TANK: Planted 10g; 2 x 10W CFL; Fluval U2 internal filter; MGOCPM/black sand cap

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post #5 of 7 (permalink) Old 02-25-2013, 01:58 PM Thread Starter
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My plan is to just keep the ammonia dosing schedule. My confusion lies in some of the forum posts that state that very high nitrites will stall the cycle. Just don't want that to happen.
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post #6 of 7 (permalink) Old 02-25-2013, 02:15 PM
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Keep dosing as you have been. I've found the second stage of the cycle to take longest.


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post #7 of 7 (permalink) Old 02-25-2013, 08:01 PM
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Quote:
Originally Posted by Bsponsler View Post
My plan is to just keep the ammonia dosing schedule. My confusion lies in some of the forum posts that state that very high nitrites will stall the cycle. Just don't want that to happen.
Yes, it's necessary to continue giving the bacteria ammonia.

Would it be possible for you to post links to those posts so I can read them? I know that a sizeable amount of nitrites has to build up before the nitrite-converting bacteria start to get activated.

Steven

MY TANK: Planted 10g; 2 x 10W CFL; Fluval U2 internal filter; MGOCPM/black sand cap

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