Yes, there is AquaMart in Stillwater, but in all blunt honesty, it's not even worth stepping in the store for. They stopped carrying saltwater stuff because of lack of interest, and their prices are outrageously high. Nothing like a used 50 gpd RO unit that needed filters to be replaced for $300. There is also *shudder* Petco. Between the two, there really is no "lesser of two evils". It is well worth the 65 mile drive to Edmond to the nearest "good" store. Heck, it's worth the drive to Wet Pets in Norman from Stillwater. If you prefer Tulsa better, it's the same distance, and from highway 244, Aquarium Oddballs is the closest. But, if you are in a pinch for things like food, I actually prefer AquaMart. You can pick up frozen Mysis and Cylcopeeze there, while Petco only carries Vitamin Enriched Brine Shrimp at the best. Also, Petco's 160g Buckets of Instant Ocean run $62.99 at Petco.