I'm done with the disposable o2 tanks from Lowes. I don't know if I left the dial on the wand turned on or what but I got 1 use out of my last tank and was thoroughly infuriated when I tried aerating my next batch. I would like to get an o2 tank from a welding supply with a shut off valve but need to be able to hook my aeration wand to it. Does anybody have a rig like this or know where I can get one?