I just received 15lbs more of Fiji rock. It's been out of the tank, in it's heated insulated shipping container for about 12 hrs. I also received a Prism deluxe skimmer. How long should I cure the rock? I have the container filled with water at 1.027, and the skimmer is breaking in on the side of the container. I've read anywhere from 3 days to 3 weeks, what do you all think?