begginer question..live rock..
You can add it all at once or a little at a time, depending on the size of your wallet.
If you get fresh off the plane uncured live rock you will have to let it cure in your tank before you add any animals to the tank.
If you add alittle at a time you will have to add pieces slowly. If you add too much at once after the first addition, you could have the new rock cause an ammonia spike, which could kill off any animals you have already added to the tank.
HTH Dale
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