No, you can't put a fully grown burm in an aquarium. The last thing you want to be doing is trying to lift a giant snake out of a glass tank. I believe there are some reptile cage retailers (like Vision) that make enclosures big enough for burms, but I haven't checked into it myself. At a minimum, the square footage of the floor should be the length of the snake plus another foot or so. So...a 15' snake could live in a 7' x 2.5' enclosure. I'd give it at least 18" for height...24" would probably be better. With a front/side opening. In an enclosure that size, I would also take the snake out frequently for stretching and exercise.

Another thing to take into serious consideration, is always having a partner available to help you with the snake when you need to take it out of its enclosure for any reason. Once it gets to 8'+, you need to have someone else around (strong enough and mature enough to help if something goes awry) whenever you take the snake out. Even if you think you're strong enough to lift and handle it easily on your own...once a snake that big decides to wrap you for whatever reason, a second person there may save your life.

Last thing to consider when looking at making an enclosure, is feeding. You can't feed a giant snake outside its enclosure like we do with smaller ones. One way that keepers avoid a possible "Pavlovian" reflex to feeding is to have two different openings in the cage. One is used accessing the snake in any way...and the other is used exclusively for placing prey into the enclosure. (Usually one in the front for access, and a smaller one on the side for prey)

Just some thoughts that I ponder when I consider my own dreams of owning a burm or other giant snake.