I don't think it really matters....
My tank was started with the rocks from my old tanks that have been dumped in the the woods with rain, sun, and snow for a couple months(Sure way to get rid of any pest
).
While I was waiting for the new tank to be built, I collected all the rocks and put them in a rubbermaid. Made some water with IO and place a powerhead and let them sit for about 4 months then started to use them in a temporary while still planning out the new tank. You can look at my post here.
Oh Boy!
bostonreefers.org
This turned out to be the best prep process I ever did to start a tank. No green phase, no fish dying. I don't know if it's the extra time allowed for the rocks to cycle and process or the running of UV and large skimmer with very little bioload to clean out the rocks or the natural exposure to the outside environment or all the above.
I think if you give it enough time, nature will take care of itself. Even if you get the green phase, don't panic and let it phases itself out. Every fire will burn out, eventually.