I've heard alot of conflicting stories on this website about curing live rock...........Looking at this from a scientific point of view, the bacteria which grows both inside and outside of the live rock does not need light to grow the coralline algae does need light and should be provided with such throughout the curing process, R/O is uneeded also......The best and easiest method is to leave your rock in a warm, dimmly lit place...You can use the crappiest salt on the market (ViaAqua lol)....The only thing that you can do to shorten cycling time is to frequently change the water (100% water changes if possible). A protein skimmer is also helpful in the curing process and helps to control the smell from dieoff..