Quote:
Originally Posted by reeffish6
I only wnat to take a few pieces the rest I don't want.
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If you only want to use some of your old live rock what i would recommend is to put whatever pieces you don't want to use (long term), into your sump. Or, if you don't have a sump put it on your sandbed in the tank somewhere easily accessible where you can take it out later. This allows the tank to remain biologically in balance after the transfer. As time goes on new bacteria will culture your sand bed, various surface areas, or any new rock you might put in. Then you can slowly take out the pieces you don't want that's sitting in your sump or sand bed.
If you don't transfer all of your rock at once you may be able to get away with it, but you will also risk the possibility of not providing enough biological filtration which will send your biological balance out of wack (sideways).