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Old 01-17-2007, 09:18 PM   #1
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Curing while cycling? Is it wise?

Im currently cycling my tank.....i am also curing some rock that i made myself with cement and oyster shells with a recipe i found online......as far as the cycling process i just have sand and water in the tank running with 2 canister filters.....would it be wise to cure the rock while im cycling the tank i heard somewhere it would work out well for me but then again this is rock i made with cement i dont know if this would be different. Please advise on if i should wait on curing it outside the tank or if it will work all the same and help the cycling process considering the rock will spike the PH as a raw shrimp would anyway. THANKS IN ADVANCE!!!!

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Old 01-17-2007, 09:54 PM   #2
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The raw shrimp doesn't produce a pH shift, it produces ammonia. The ammonia is what you want to introduce. How exactly are you currently cycling your tank? If there's nothing but sand (not live, but originally dry sand from a bag) and water in your tank, you're not cycling.

Cycling your tank means that you're building up a population of beneficial bacterial that will take the fish waste (ammonia), turn it into nitrites, and then turn around and turn THAT into nitrates - which in small amounts in not harmful to your inhabitants, and can be dealt with by water changes. The beneficial bacterial will colonize your sand or rock or filter sponges on their own - you don't have to introduce them. BUT, you DO have to introduce an ammonia source to start the whole ball rolling.

Sorry if that's all elementary for you, but from your post it didn't sound like you were really clear on what a cycle is actually doing.

Regarding your cement rock issue... I haven't a clue. From my limited experiences with curing cement, I know there are some serious chemical reactions going on during the curing process. Usually, folks "cycle" their tank with their rock in place as a large portion of the beneficial bacteria will live there, in addition to the sand. Personally, I'm a "play it safe" type of person, so I'd probably choose to let the cement cure first so as not to introduce some unknown into your tank right from the beginning.

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Old 01-17-2007, 10:12 PM   #3
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IMO you can cycle you tank and cure your rock at the same time. I tell people all the time to do it but they have real LR from the ocean and their will be a die off and provide an ammonia source. Your rock will not have that source so you will need to add a piece of shrimp to jump start that ammonia source and then you can cycle and cure. Here is a link to the cycle

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Old 01-18-2007, 09:40 AM   #4
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I agree with the previous posts. I think, if you use cement, you need to cycle it outside of your tank, because it leached lime or some other chemicals (if I remember correctly). Here is an Article and This one that might help.
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Good reading about:
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curing, cycling

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