Carl used to have a storefront, but closed it down and moved to the basement of a mortuary
you can't visit - for obvious reasons - but can pick up, or he can usually drop off.
He has been servicing tanks all over the city (will be looking after mine, as I'm about to go away until summer) for decades.
The stock list on his web page is rarely up to date, but check out his you tube videos for stuff that has come in... http://www.youtube.com/user/CarlsAquarium?feature=watch
his contact details are on the website: http://carlsaquarium.com/