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Old 01-24-2013, 08:20 PM   #1
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Nursery tank issue

So I keep a small tank for new fry, and have noticed that even if I use water from my main tank, once the tank is up for about a week, it starts a small cycle and nitrites/ammonia start to creep up.

What's the best way to avoid this? Should I keep the nursery tank filter running even when no fry are present to add to the bioload? Should I keep a couple of small fish in it to maintain the water parameters?
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Old 01-24-2013, 08:54 PM   #2
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Originally Posted by dmolavi View Post
So I keep a small tank for new fry, and have noticed that even if I use water from my main tank, once the tank is up for about a week, it starts a small cycle and nitrites/ammonia start to creep up.

What's the best way to avoid this? Should I keep the nursery tank filter running even when no fry are present to add to the bioload? Should I keep a couple of small fish in it to maintain the water parameters?
If there is no ammonia, there will be no cycle, unless you're using a direct share with you're main tanks water, the cycle shouldn't happen. If you are, i would keep the filter running, because the filter is the one with the good bacteria. I'm not sure about adding a couple of fish, but it isn't a bad idea if it can actually stabilize it, but i doubt it.
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Old 01-24-2013, 09:00 PM   #3
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I pulled the water directly from the main tank that had zero ammonia and nitrites, and now both are creeping up. I had to do an emergency detox w/ Prime this afternoon to pull the nitrite levels down.
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Old 01-24-2013, 09:04 PM   #4
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I pulled the water directly from the main tank that had zero ammonia and nitrites, and now both are creeping up. I had to do an emergency detox w/ Prime this afternoon to pull the nitrite levels down.
Do you have anything in it?
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Old 01-24-2013, 09:08 PM   #5
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Half a dozen guppy fry. They're actually doing very well..surprisingly..
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Old 01-24-2013, 09:11 PM   #6
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Half a dozen guppy fry. They're actually doing very well..surprisingly..
The i doubt it should be much of a problem. If you can try changing a bit of water to dilute the ammonia/nitrite.
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Old 01-24-2013, 09:15 PM   #7
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I'll give that a try tomorrow.
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Old 01-24-2013, 09:28 PM   #8
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IMO, I would place the filter on the main tank till needed that way you build bb when not in use
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Old 01-24-2013, 09:31 PM   #9
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Half a dozen guppy fry. They're actually doing very well..surprisingly..
Keep up on your testing and pwc's as needed...good luck
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