Adding live rock

[tankkeeper]

I'm new to this hobby and have a 75g reef I'm setting up and it's already went through the cycle,can I add more live rock?I have 40# in there now and I bought 80# from a dealer that has been in his tank from 5 to 8 years, its got to be shipped to me (2 day shipping) and it will be in water and plastic bag inside styrofoam containers, will it be OK?

 

[bang guy]

It will be OK but it may cause a small ammonia spike in your system when you add it.
Be ready with enough saltwater for a large water change just in case.

 

[tankkeeper]

Thanks for the help.