It is always a good thing to emulate nature whenever possible in our tanks. Storms and hurricanes are Natures way of keeping the reef in check, and all the life therein and thereon in perfect balance. It is a natural thing.
Old and dying coral is "offed" during a storm. Many animals are stimulated and rejuvinated. New "real estate" is now available for new and stronger growth. Many organisms are washed clean of debris that may have been suffocating them--new growth almost immediately appears.
Storms are a good thing indeed. And yes, even the killer "once in a century" storms where nature decides to really clean up.
I too simulate a "storm" by blowing off the rock, and it always amazes me how much gunk comes off! And you think your tank is soooooo pristine. I do this quarterly, one storm per season.....
I do it in conjunction with a water change, as many above have stated. I am equally amazed at how crystal clear my tank is after one of these storms. (Obviously, the next day.) I use a powerfilter with a little floss and carbon for 48 hours after the storm.
Well, it works for me. And my tank seems to benefit a great deal by the looks of it!
As always, my .02
Hermit