Base Rocks

Thanks. I realize that it will be some time before anything grows on them, but I'm on a very tight budget with this project and want to save as much as possible.

I assume that the more live rock I add the faster it will add life to the base rocks. Is there a minimum of live rocks pet gallon I should have for filtration purposes? I'll be using a DSB and will have no fish until everything is very stabalized (several months).

Also, should I do anything to these rocks before using them? Wash them good and boil them maybe?
 
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