Update! Got mine in! Cool unit, Will be taking it to the pool tomorrow night. It has an attachment that allows you to put a fitting on a std regulator hose. This fitting is a quick release. I was thinking I needed just an LP inflator hose but this is even better as I can put it on a 7 ft hose and have plenty of slack for the kids to shoot while I manage the tank. Going to just take the 19 cu ft pony tomorrow to see how that works out. If it proves too small Thursday night I'll take a 30 or 40.