Quote Originally Posted by Wh00h0069 View Post
You can, but space heaters increase your energy bill a lot. Mine in the winter was up over $100 each month to heat my snake room. I have since switched to RHP's, and it has gone down considerably. I keep them on a proportional thermostat, so they do not consume much energy.

To the OP, I use an 80 watt in my 4 foot cages. You may need to go a little larger. Your best bet is to call Rich at Reptile Basics about that.
You're right, it looks like the 80w is gonna be slightly underpowered for a 6 foot cage. I'll be going to the 120w RHP's instead.