Not if you get a fast enough suction, should stir the res pretty good with the dripping and pulling of water.
Maybe it's an organic thing or somethin, but I didn't think nutes needed to be aerated.
The water gets plenty of aeration due to the pumps air blowing the water up to the rings and it also gets alot by splashing the media. Adding air stones makes a foamy mess. or just use a really small airstone if you feel its needed. I have read a few articles now saying the extra air is not needed.