Those of you with BPs and corns...

From the reading I did, corns like a warm side much cooler than a bp, so I wouldn't try putting them on the same t-stat. Not worth the risk in my opinion. Jenson's cage has a UTH set to 85, the floor covered with a cut-to-fit repti-carpet so he can't get to the bottom and then shaved aspen. I thread the t-stat probed through the repti carpet so it sits on top of it in the aspen, right where he lays. (well, that's how we do his, the bp and bcc's t-stat probes).

Anywho....yeah! :D

Bottom shelf of a rack works good for corns since in my case it is 6 degrees lower due to sitting on the floor and all of the heat tape in the rack is wired to one plug and controlled by one thermostat.
If you go this route. Use a temp gun to check temps.