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Old 07-16-2009, 07:44 PM   #1
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live rock or maybe not so live

I bought some live rock from someone who is downsizing tank. we live like 2.5 hrs apart so we agreed to meet in the middle. i got the rock home and noticed he put the rock in a tub with water but it was fresh water. not really worried bout the cost becuase it was actually cheaper then some of the dry rock i have bought so that is not a problem. i am just curious if you think the stuff will live or was it in fresh water to long. i am assuming it was in the fresh water for about 3 hrs. i rinsed it in SW and then put it in my tank. it is the only LR i have gotten so i just need to know if i should be getting some more LR or if this will survive.
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Old 07-16-2009, 07:46 PM   #2
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You'll need to cure it. The FW probably killed any of the beneficial bacteria, or at least the large majority of it.
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Old 07-16-2009, 07:50 PM   #3
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maybe i am missing something. i need at least some liver ock to start this whole process right. i cant just throw dry rock in there and a shrimp and let it cycle. there has to be some live rock to start the process am i right.

this live rock i bought was suppose to be that live rock so if this is the case then i need to get some more live rock correct.
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Old 07-16-2009, 07:53 PM   #4
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You want an ammonia source to kick off the cycle. The shrimp will provide that for you. The live part comes into play once you have a bacterial colony that can convert the ammonia to nitrItes to nitrAtes. If you had fully cured LR, you would already have the bacteria.
I threw in base rock and shrimp to cycle my 125....
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Old 07-16-2009, 08:02 PM   #5
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i understand this but the fully cured live rock was the rock that was in the fresh water. that is my whole question. that rock is not gonna seed the tank with bacteria from being in fresh water for so long right.
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Old 07-16-2009, 08:06 PM   #6
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You probably lost alot of it but I`m sure you still have some bacteria still made it. You`ll be OK. Just add an ammonia source.
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Old 07-16-2009, 08:12 PM   #7
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ok ty i did add a shrimp last night. how long is it before u generally see the amonia start to rise i tested water today and numbers are as follows

SG-1.026
PH-8.0
ammonia-.5
nitrites .5
nitrates 20
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Old 07-16-2009, 08:19 PM   #8
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Hmmm, what kind of test kit are you using? You already have nitrAtes...have you tested your source water?
To answer your question, about 3-4 days you should see the ammonia start to raise.
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Old 07-16-2009, 08:22 PM   #9
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yeah that kinda peaked my curiousity as well. i have not tested the source water but the water has been in the tank for about 3 weeks now. i had to get phosphates out before adding salt they were kinda high.
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Old 07-17-2009, 10:53 AM   #10
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If you add in all live rock, and no base, how does this effect the cycle? Should you still use the shrimp to kick start something?
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