I know we talked earlier, but I wouldnt rinse it either. I would get something to skim the bubbles off the top of your tank. Also, are you adding it to your exsisting tank or just the refugium?? If adding to the tank, I personally would put livestock in tubs outside your tank while the sandstorm settles. Run your skimmers, they will run overtime, you may even want to drop another couple in there. Also to minimize the storm, there are several suggestions.
1) if you empty tank. put sand on bottom, cover it with a bag and than add water, preventing you to stir tank up too much.
2) if you dont, put sand in another bag, cut the corner out and submerge bag and squeese to bottom.
3) give me a call one night and we will knock it out together if you need a hand