Im using a herpstat 1, and 11" 20watt flexwatt to heat my rack.

I have my herpstat plugged into a wall outlet by itself. when ever I plug anything else into the second wall outlet, It robs power from my rack, and my flexwatt just quits and the tepreture just keeps dropping, untill i unplug everything and turn back on..

comments on why this may be happening?