It can burn the snake, but the snake can also burrow under all that substrate and get burned anyways. I'm glad to hear you're getting a thermostat. When I used cocofiber and aspen I only had about 1/2 of substrate so the snake didn't have to burrow to get to the heatRemember, the hot spot of 90 degrees should be read under the substrate, not on top of it, since she may end up burrowing anyways
Reply With Quote