We use a UTH and an infrared bulb for our tanks. One has a dimmer, which is nice because we can adjust light output as needed. The other is hanging from a light stand, so we just played around with the height until we got the temps right in combination with the UTH. I imagine you could do something similar with a CHE if you're worried about it being too warm, just raise it up (although I've heard you should regulate CHEs with a thermostat, just like a UTH).