I use Pro Panels as mentioned above. That is all I use however if you want 2 heat sources thats fine too. Use a Herpstat 2 and that will control both. Now that you have seen what can happen, spend the money for a top of the line Tstat. The Herpstats last forever and they have alarms. Do not go with a cheap Herpstat Ez model.. they do not have all the features.
A How to link above has already posted for you.
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