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Old 12-15-2013, 05:23 PM   #1
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Has Tank Cycled?

I set up a 40 gallon saltwater tank about 2 months ago. I used dry rock and dry sand in the tank. I has sorta been put to the side for a little while. I have kept a close eye on it, but just let it do its thing, not adding any livestock. There is a pretty good amount of algae growth on the rocks. How can I be sure of the tank has cycled? I put a raw shrimp in yesterday, to make sure it has cycled. In the case that it has cycled, what parameters would I get from the decaying shrimp? Thanks!
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Old 12-15-2013, 05:48 PM   #2
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0 ammonia 0 nitrites and nitrates will vary but should have some
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Old 12-15-2013, 06:30 PM   #3
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0 ammonia 0 nitrites and nitrates will vary but should have some
And if has not cycled, I should expect the normal peaks?
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Old 12-15-2013, 06:31 PM   #4
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If you have any ammonia or nitrite it's not cycled
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Old 12-20-2013, 11:03 PM   #5
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BREAKING NEWS

So I put in the dead shrimp about a week ago. Since then algae has blown up all over the rock.
I just tested the water and ammonia and nitrates and nitrites were all close to zero. Does this mean the tank has cycled?
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Old 12-20-2013, 11:47 PM   #6
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I imagine the algae you are referring to is a rusty looking color if so it is diatoms algae usually a sign a tank has cycled. Not always though but a pretty good sign the shrimp should have been put it from day one you waited a little long to put it in the cycle might have been completed a couple weeks ago and you are experiencing ammonia from the shrimp but if your reading are 0 you should be cycled.
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Old 12-21-2013, 12:22 AM   #7
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I imagine the algae you are referring to is a rusty looking color if so it is diatoms algae usually a sign a tank has cycled. Not always though but a pretty good sign the shrimp should have been put it from day one you waited a little long to put it in the cycle might have been completed a couple weeks ago and you are experiencing ammonia from the shrimp but if your reading are 0 you should be cycled.

Thanks for the input. The algae is actually green
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Old 12-29-2013, 01:55 PM   #8
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--Update--
I tested again today.
Ammonia=0
Nitrite=0
Nitrate=20

Is it safe to say the tank has cycled? I am attaching a picture Click image for larger version

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ID:	214140Click image for larger version

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Old 12-29-2013, 09:18 PM   #9
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I think you have cycled but you have to address the algae outbreak you have.

These are some great tips.

http://www.brettsreef.com/tips-on-ba...rine-aquarium/
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