many people house them in storage containers and use Under Tank Heaters hooked up to a temperature controller(thermostat,rheostat or dimmer) with no problems. if you don't have any of these, i suggest getting one before setting them up in containers. zoo-med makes a thermostat and rheostat and they sell for $19-$25 online.
your posts to these threads are getting old now, do you actually sit and wait for this poster to start a thread so you can attack him? either give him the advice he needs, or stay away from his threads. time to grow up.