Dead rock with live rock

[Lorretto]

i used dead rock I had from 3 years ago to make a rock face using Aquascape glue. It's about 10 lbs. The rest is going to be live rock.
I've read that i must seed the dead rock with live rock and or keep the live rock in the tank for 2 weeks and take it out?
Does that make any sense? When i add water I'm going to add the live rock with the dead rock and let the cylce begin.

 

[reefD]

thats fine. no need to take either out. the dead rock will seed during cycle . in other words do what your saying minus removing any of the rock. if you want to seed then remove the live rock cause you want it in another tank thats fine but if you leave it in no harm or foul. id leaveit all in