if you plan on just getting one snake. You can either A) Buy the Herpstat II thermostat. This thermostat allows you to control two different temperatures with one unit. It's pretty pricey but it'll do the job. B) you can order a regular Herpstat or Helix thermostat. Each thermostat should come with 3 plugs to power up, lets say three heat pads. You can use one heat pad for your hot side. Then using the same type of heat pad, connect that to a dimmer or rheostat. Set the dimmer to either low or medium. Connect that dimmer to the second plug on the thermostat. So your using two heat pads with the same thermostat but one heat pad connected to a dimmer/rheostat to make that one heat pad at a lower temperature.