I know you asked someone else, but I'll answer and say that I'm pretty sure that is in fact what he's talking about. However, be very careful. The recipe calls for 3% solution and the stuff from the pool supply store is 27% so you have to dilute it down to 3% using distilled water at a 9/1 ratio before you get into the normal recipe. After mine is made I store it in a 1 gallon bucket like this. It keeps the light out, has an air vent on top and has a spout at the bottom for filling your field bottles. Oh, and someone gets to drink the margaritas before you use it. The bucket is awesome.