` One warm spot in a cage, with a cold floor otherwise, is a source of respiratory infections, and digestive problems, in all tropical snakes. Floor heat over the entire floor of the cage, with a gradient, is the safest method for non-arboreal snakes. Snakes don't need to thermoregulate, they do it when they must. If a cage has one warm spot, with the rest cool, and the snake fouls up its thermoregulation routine, you have a sick snake. Heat lamps and heat emitters, cause this problem, too. These methods also reduce valuable humidity. With floor heat, you can place a water dish over a warm spot, causing humidity which a properly sealed, and vented cage will retain. Just remember that warmed water is a bacterium's paradise, so constant sanitation is a must!
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