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post #1 of 5 Old 09-06-2011, 07:30 PM Thread Starter
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Is my tank cycled?

I've recently bought a second hand tank (filter, gravel, heater etc.) and its been sat filled for a few days now. My API master kit came today and was surprised to see that my tank has a very small concentration of ammonia, no nitries but 10-20ppm nitrates.

Could the bacteria have survived in the filter and I don't need to cycle the tank?
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post #2 of 5 Old 09-06-2011, 07:38 PM
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How small is small? lol

Were the gravel and filter still wet when you got them? It is very possible that some bacteria survived. Yay! Stock slowly and watch out for a mini cycle. :)
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post #3 of 5 Old 09-06-2011, 07:43 PM Thread Starter
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How small is small? lol

Were the gravel and filter still wet when you got them? It is very possible that some bacteria survived. Yay! Stock slowly and watch out for a mini cycle. :)
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well, I could only see a slightly green tinge in the yellow, so I'm assuming between 0-0.25ppm of ammonia.

And slightly damp I think, if it is cycled through I was considering going to the LFS and buying 3 guppies so the bacteria doesn't die due to lack of ammonia.
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post #4 of 5 Old 09-06-2011, 08:59 PM
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Get a bunch of pennywort or watersprite, too, which you can leave floating - if there does happen to be an ammonia spike, that will help because the plant will take up the ammonia. :)
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post #5 of 5 Old 09-07-2011, 12:41 AM
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well, I could only see a slightly green tinge in the yellow, so I'm assuming between 0-0.25ppm of ammonia.

And slightly damp I think, if it is cycled through I was considering going to the LFS and buying 3 guppies so the bacteria doesn't die due to lack of ammonia.

Dont need to get fish, you can just drop a bit of fish food in. Unless you were planning on getting guppies anyhow.

Hold the vial up against the card/book with a light at your back. If you can see green in it you're probably closer to .5
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