Hey, I need some help because i don;t really know what i'm looking for. I wnat to be able to go to my local diving shop and fill up my tank. He said i needed an adapter that screwed into the tank the it connects to the "scuba yoke" Do i just need to buy one of those fill stations or do i need something completly different. He shpwed my somehting that he thought would look like what i needed..and it looked nothing like the fillstation i see for sale. Anyways any help is appreciated