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Old 03-24-2005, 07:14 PM   #1
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Live Rock question

I bought liverock that came in with a shipment of fish at petco that was in a shopping cart waiting to be put in a tank. Does this mean it is curred or what? Should I have bought it from the water?
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Old 03-24-2005, 07:19 PM   #2
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I would cure it just to be safe. Since it is fresh from shipping, it will likely have some die off. And you don't know how long it has been out of the water.
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Old 03-24-2005, 08:12 PM   #3
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If petco hadn't even put it in a tank yet, it's uncured. There will have been die-off during shipping.
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Old 03-24-2005, 09:20 PM   #4
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omg! WHat do i do!??!? how do i cure it??? i already have it in my tank!!! is this a problem?
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Old 03-24-2005, 09:22 PM   #5
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Do you have fish in y our tank? If so, just keep an eye on your water parameters and have water premixed incase you need to do a water change. With uncured rock, you will no doubt have an ammonia spike. If you have no fish in the tank, I wouldn't worry. Alot of people use liverock to cycle thier tank. This would work with uncured rock also.
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Old 03-25-2005, 12:21 AM   #6
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Quote:
Originally Posted by adam_keene
omg! WHat do i do!??!? how do i cure it??? i already have it in my tank!!! is this a problem?
"Curing" is basically the process of allowing the system to cycle -- the dieoff from the time the rock was out of water supplies ammonia, and the survivng bacteria use this as food to grow and multiply. This is perfect in an otherwise empty tank -- once this cycle is complete, you've got a good healthy system ready to handle the (slow) addition of livestock.

If you've added uncured LR to a system with fish, you'll have to monitor closely and be prepared to do frequent water changes in order to prevent the ammonia from rising to toxic levels.
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Old 03-25-2005, 04:11 AM   #7
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wow thanks! I have a water test kit, i just need to find out how to use it... ill watch for an ammonia spike... what is a normal ammonia level at? what would a spike be at?
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10 galllon empty tank with a whisper filter
20 gal SW tank, penguin 330 bio-wheel, redsea berlin airlift protein skimmer, 22 lbs of LR, White sand,
29 gal FW tank, undergravel filter, jaguar, jack dempsey, tiger oscar... few silver dollars, one ugly gourami...
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Old 03-25-2005, 09:13 AM   #8
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Ammonia should be at 0. Spiking is anything above 0 after your cycle.
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Old 03-25-2005, 09:32 AM   #9
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wow thanks! I have a water test kit, i just need to find out how to use it... ill watch for an ammonia spike... what is a normal ammonia level at? what would a spike be at?
After adding the uncured LR, you'll first observe ammonia rise, then begin to fall as nitrites rise. Nitrites fall as nitrates rise, and finally everything should settle back down near zero.

You'll then have an established bacterial colony capable of handling a certain bioload. Not to get too far ahead of things, but add livestock slowly after this initial cycle. If you put in too much too fast, you'll surpass the amount of waste that your bacteria can process and your tank will cycle again -- create too large of a subsequent cycle and the livestock won't survive.

Your kit should, at minimum, test for ammonia, nitrites, nitrates, and pH.
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