How long for dried rock to be live again?

I had some nice rocks that were completely overgrown with some Anthelia. I tried to peel it off the rocks like some others said I could, and it wouldn't let loose. I was just frustrated at that point, and let the stuff cook in the sun (and rain) for about 2 weeks. Honestly, I forgot that I set it outside by the side of my house on a cement "sidewalk".

Anyway, I scraped off the dry crusty stuff last night, and was about to just pitch the rock when I realized how nice the rocks were. Full of all sorts of holes and pores to make some good live rock again some day.

I put them into a bucket with some fresh saltwater, a bubbler, and a light on a timer. I added a piece of rubble rock from my sump as well just to try to get some of the "right" bacteria started sooner.

How long will it be before the rock could theoretically go back into my tank? I would assume that it will need to do a "cycle" in the bucket at some point, but since this will be just a small percentage of the biological filtration that has been thriving in my tank for a few years, I just really want to make sure that it has a good start down the path of being beneficial to the tank before putting it back in place. Plus the stuff is stark white from the dead coralline on it. I know that will take a long time to get covered again, but I am in no hurry either. Just more curious than anything.