With a tank that big, I wouldn't. Babies are flighty and easily stressed, so putting them in anything larger than a 20long is asking for problems, even with a lot of decor.

The best bet for a hatchling is a 12qt tub or 10gal tank until they're at least 100 grams weight. Then you can move them to a larger tank without as much worry for stress.

Also, you don't put the heat source IN the tank...it goes underneath it on one side.

Check out the stickies around here and see what would work best for you.