a review of National Aquatic Srvice, Inc. by A SSI shop, this shop is the oldest in CNY. Caters to all divers, from ice to tropical.
Scubapro, Oceanic, Atomic, Andy's, DUI, Henderson, Sunnto, and many more
This shop does not have a pool on premises, but it does have usage agreements for a pool very close by, classes also allow for ALOT of practice (instructor won't leave until your ready to leave). Runs trips away from CNY and also has at least 1 weekly charter.