Well, I got this tank for practically nothing so i figured I'd go big. From what I have read, there is kinda mixed emotions about cutting into a propane tank, but i had no problem. I filled it with water, soap, and a few gallons of bleach. This tank stinks!! Bad!! The bleach was to try to cut down on the smell but i couldn't tell a difference. So i filled it up on about the second week in Dec. then left for the Mother Land (Texas) and while i was gone we had this polar vortex thing in Alaska and it got to minus 20 or so for a few days. Now i have a 500 gallon chunk of ice to deal with. I will start trying to get the ice out today the give the tank a good couple of burns. But here's my progress so far.