I have a question about these two thermostates

http://www.reptilebasics.com/store/p...cat=250&page=1

http://www.reptilebasics.com/store/p...cat=250&page=1

Now I have a 20 gallon and a 10 gallon and I'm going to get flexwatt for the warm sides. The cool sides will be controlled by a space heater for the winter. Now if I get just one of these thermostates would I be able to control both heat strips and the space heater, or just the two strips because they will be sit for the same degree but the space heater won't.

Also once spring comes around I'll get two more heat strips for the cool side will I need to get another thermostat as well. Thanks for all you help guys.

Also if I won't be able to use one thermostat to control two different temps with these do they make ones were you can, if they don't they should.