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post #1 of 5 (permalink) Old 12-11-2012, 10:28 AM Thread Starter
 
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Changing Tanks, quick question

I currently have a 20 gallon tank with a ten gallon sump. I just bought a 36 gallon bow front. My question is, can i transer sand and live rock, and add extra sand and live rock without the tank cycling again, or will the tank cycle. I will probably be adding about 10 lbs of sand, and about 15 lbs of liverock. I only have a bangali cardinal, two snails, and an urchin. I will be making a new sump, still 10 gals.
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post #2 of 5 (permalink) Old 12-11-2012, 11:21 AM
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Re: Changing Tanks, quick question

Well, will you be keeping most or all of your water? You will be going from 20 gallons to 36 gallons. Adding the additional 16 gallons of water along with your current 20 and then transferring the fish to the 36 would almost be like doing a 45% water change. Just keep your filter/sump running through the process and then slowly add new sand and live rock. It should not have to re-cycle if done properly. New equipment is fine, as well as the rock and sand. It is the currently cycled water that your worried about. A huge loss of water can force your system to re-cycle itself. You can go get water from your local pet store to make transferring safer.
What kind of urchin do you have?

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post #3 of 5 (permalink) Old 12-11-2012, 01:52 PM
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Re: Changing Tanks, quick question

Yes it will go through a mini cycle, as the bacteria will have to colonize the rock and sand you are adding to the tank.

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post #4 of 5 (permalink) Old 12-11-2012, 02:48 PM
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Re: Changing Tanks, quick question

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Originally Posted by Reefing Madness View Post
Yes it will go through a mini cycle, as the bacteria will have to colonize the rock and sand you are adding to the tank.
I dont believe it will go through a full cycle to add additional bacteria to live rock but I guess thats what your getting at when you say, "mini." and of course he is correct. The live rock will have to "cure". Correct me if Im wrong Reefing but would he would be okay transferring all of his critters while the sand and rock cycle?

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post #5 of 5 (permalink) Old 12-11-2012, 06:23 PM
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Re: Changing Tanks, quick question

Pretty sure he'd be safe moving everyone over, he does not have a big bio load, so the mini cycle should not be big.

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