Fishless cycle question - The Planted Tank Forum
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post #1 of 6 (permalink) Old 05-10-2015, 11:06 PM Thread Starter
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Fishless cycle question

Hi folks, I'm setting a 10 gallon tank and it is currently on the 3rd week doing a fishless cycle. When I first started it I moved some filter media from one of my established tanks.

I had ammonia go up to 4ppm and nitrites reached about 2ppm. After about 2 and a half weeks my ammonia is 1ppm, nitrites are 0 and nitrates about 30ppm.

I have never had a cycle do this before where I had ammonia but no nitrites. Usually ammonia would drop to 0 than the nitrites. Anything else I should be doing?

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post #2 of 6 (permalink) Old 05-10-2015, 11:17 PM
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The various bacteria populations exist as a result of the bio-load in the other tank.

With a minimal or lack of bio-load the bacteria workforce will need to reduced and thousands will be laid off and suffer or die.

Consider adding a few fish.

Theory and practice look great on paper.



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post #3 of 6 (permalink) Old 05-11-2015, 12:12 AM
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As long as you have either ammonia or nitrite at levels greater than zero, do not add any fish. They will probably die of ammonia or nitrite poisoning. Are you adding any fish food or liquid ammonia to the tank every day?

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post #4 of 6 (permalink) Old 05-11-2015, 12:43 AM Thread Starter
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I have shrimp pellet food that I put in (about 4 pellets) and it sits on the bottom for about 4 days before fully dissolving.

I forgot to add that I have some DHG in the tank and it had some die off. This could be adding to the ammonia?

Last edited by PhilthyMcnasty; 05-11-2015 at 12:59 AM. Reason: added more info
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post #5 of 6 (permalink) Old 05-11-2015, 12:57 AM Thread Starter
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Mods, Please feel free to move this to the General forum. Apparently I wasn't paying attention.
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post #6 of 6 (permalink) Old 05-11-2015, 02:07 PM
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You need some plants in there. At least some moss. Another good plant for starting a tank is wisteria.

With lots of fast growing stem plants you can add a medium to large fish load all at once and never see the traditional ammonia or nitrite spikes. Suggestions (4-6 stems each) of plants for each five gallons of water. Plants Foxtail, Hygro, Creeping Charlie, Red Ludwigia, Moneywort, Wisteria, Egeria, Shinnersia rivularis, and Sprite.

Last edited by Hilde; 05-11-2015 at 02:08 PM. Reason: changed fonts
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