Hi all,
I just wanted to give a heads up that there is a good place to get sand, gravel, and river rock for freshwater aquariums (and landscaping alike!). Its called Roberge Trucking and its on the north shore. Its pretty cheap (like $6 for a garbage pail full), and they donate tons of money towards animal rescue societies so help them out!
http://www.robergetrucking.com/

-Diana