Cycling 2.5g w/ Tom's Mini internal - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 07-04-2010, 07:22 PM Thread Starter
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Cycling 2.5g w/ Tom's Mini internal

Hello there,

I have set up a 2.5g that is jam packed with java moss that is going to be used as a cherry shrimp tank. I am using a Tom's mini internal filter (w/ the spraybar) and a 25w heater. The tank stays within 1/2 a degree of 79F. It seems like the tank is having some issues cycling. I started with 3 drops a day of ACE hardware ammonia. Once the ammonia spiked I cut it down to 1 drop in the morning and one drop before bed. It seems like everytime the nitrites spike and then drop to zero the cycle stops. This has been going on for the last three weeks. I'm not doing any water changes. I'm assuming there have not been any nitrates because of the huge amount of Java moss that is in the tank. Anyone else have issues getting a 2.5g to cycle?

Thanks!


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post #2 of 4 (permalink) Old 07-04-2010, 07:40 PM
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What ppm are you getting with that level of ammonia dosing? Are you also checking for nitrites? It may be that the plants are absorbing the ammonia before N-bacteria even get a chance to colonize to begin converting it.

I'd shoot for a 4ppm ammonia level daily and see where that gets you- that should be more ammonia than can be used up by java moss.

Personally I'd maintain that level until after you start getting some nitrate readings, then you can cut back to 1-2 ppm ammonia daily if you want (or just keep going at 4ppm, it doesn't really matter, since you'll be doing some large water changes at the end of the cycle to remove the nitrate buildup anyways...)

But yes, it can be quite a challenge to get small tanks cycled. The smaller a volume of water, the more difficult it is to maintain stability.

Also, what type of media do you have in your filter?





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post #3 of 4 (permalink) Old 07-04-2010, 07:48 PM Thread Starter
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I just have the stock foam media in the filter. There is a little tiny packet of carbon as well. My question is though since the plants are absorbing quite a bit, do I really need to cycle it if I'm only going to house 10 cherry shrimp?


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post #4 of 4 (permalink) Old 07-04-2010, 08:07 PM
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Depends on how much ammonia is being absorbed on a daily basis. If your java moss is absorbing 2ppm of ammonia every day then you're probably safe (though I can't imagine java moss being able to absorb that much ammonia... I could be wrong!)

Do you have any other established tanks you could pull some established filter media, mulm, or substrate from?





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