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Old 06-09-2009, 11:51 AM   #1
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Exclamation Another cycling concern

Biocube29: We just added a raw piece of shrimp last night. My husband thinks we don't need to do this b/c the LR was cured. I want to be absolutely sure we are doing the right thing. The LR from the LFS was cured already and before we put the shrimp in, the ammonia, nitrites and nitrates were all zero. We in fact DID NEED to put the shrimp in even thought the LR was cured to get the nitrogen cycle going, right?

Thanks!
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Old 06-09-2009, 12:22 PM   #2
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Maybe, maybe not. If you don't see ammonia in 4 days you should be cycled from the LR.
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Old 06-09-2009, 12:25 PM   #3
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If your LR is cured you probably wont see a big jump in ammonia or nitrite. You probably could have gotten away with the dieoff from your LR.
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Old 06-09-2009, 02:24 PM   #4
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How do we know if it is cycled when we have zero ammonia, nitrites and nitrates (before shrimp)?
Should we take the shrimp out?
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Old 06-09-2009, 04:01 PM   #5
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If the rock was indeed cured, then keeping the shrimp in will do no harm. It will decompose, giving you ammonia, which your cured rock will quickly convert to nitrites and nitrates. Keeping the shrimp in there, you'll know the rock was cured if nitrates begin to show up. (That assumes you started with nitrate-free water.)
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Old 06-09-2009, 04:22 PM   #6
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Thank you. I feel much better. The water was nitrate free before the shrimp.

Now, one more concern. We have a couple of snails, small starfish and feather duster tubeworms. Will this shrimp process kill them off?

Thanks again!
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Old 06-09-2009, 05:05 PM   #7
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Depends on if the rock was cured or not. If it was cured, then you won't see a cycle - you'll just see nitrates showing up meaning your tank is ready for critters. If it wasn't cured, then you'll see a cycle and the critters will be at risk.
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Old 06-09-2009, 05:24 PM   #8
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Thanks. Do you recommend doing water changes?
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Old 06-09-2009, 05:58 PM   #9
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PWC`s will slow down the cycle but if you want to keep those inverts alive you will need to do some. Nothing should be in the tank during the cycle.
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Old 06-09-2009, 11:19 PM   #10
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I agree, plus the shrimp will give your clean up crew some extra snacks!
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