cured rock vs. cycled tank

[troni]

I've been doing my due diligence and researching like crazy, granted I didn't read the stickys in the topic. Now I know you new to cycle and you need live rock as a main bio filter but if I were to put 80% base rock to 20% live rock to keep prices lower would I need to wait till the base rock is cured? Or can base rock have the correct bacteria on it to be cycled without being fully cured? Hope my Q is clear. Can base rock cycle a tank like live rock? When I start my tank I have to do this anyway so maybe ill do a experiment without harming any livestock of course.