This is where I buy all my fish stuff. For really, no other reason that that I've been for the past 5 years or so, and it's like a 10 minute walk from my house so it's pretty convinient.
The store kind of smells like warm fish, but I guess that's from all the... um, fish, and they need to keep it at such a temperture for the tropical little critters.
they carry absolutely everything your aquarium needs. Filters, tubs, food, etc. Prices are reasonable. Staff are very knowledgable about all the fish questions, so if you have one, bring it.