If you are curing the rock there is no need for lights. Put it in the dark. Make sure there is good circulation and that you do water changes, at which time you remove anything you can from the rock and swish it around good.
It's called "cooking" the rock and should work well to get you where you want to be. Running a skimmer is also good if you have one. So circulation heater and skimmer, no lights, water changes, rock cleaning.