ThankyouYou can always use larger wattage CHEs and always can use more than one. In one of my first enclosures, I had a “small” CHE far left, and one CHE far right. A basking light in the center. The combo of CHEs and bulbs helped maintain good overall ambient temps.
CHEs vary here from 40 - 250 watts. http://www.lllreptile.com/catalog/173-nighttime-heat-bulbs