Pond Algae and Aquatic Weed Killers

So now that I've relocated to the east coast, I've got a fairly decent sized pond on my property that has had some nasty funk growing in it.  I didn't care enough to figure out what exactly, I just realized that the intense odor was enough reason to eradicate whatever aquatic weeds were causing the funk.  Well, it turns out I really need to put forth a little effort into determining the type of algae in my pond so that I can decide upon a course of action.  In particular, what aquatic herbicide to buy to control the stank in my good ol' watering hole.  I'll be sure to update my blog here when I get the situation all figured out.  In the mean time, wish me luck!