Originally Posted by IffyG
I wouldn't even bother using the aquarium pump. Sanitize a small piece of plastic wrap, cover up the hole and shake that SOB for a minute or two. Works perfectly for me.
I agree with this, as long as you're not brewing high gravity beers. Cap it, shake it, call it a day.
While yes, it's probably impossible to over aerate with a stone, I would worry that the longer you pump air into your wort, the more chance you have of pumping something bad in and getting a secondary infection. The risks (and the hassle) far outweigh the benefits.