What should i use to controll the flexwatt?

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I am getting an '05 Hogg island boa and a 4x2x15 T10 cage for him, and i chose the 11" flexwatt as the choice for heating the enclosure. I dont want to go and spend 60-100 bucks on a ranco thermostat, so what kind of rheostat could i use to controll the flexwatt? will a cheap one from home depot work? I just need something to control the temperature of the flexwatt to the desired low to mid 80's *F.

cant with wrong with a herpstat i use helix, ranco and herpstat and its my fav by far, it has the best features and they can control up 2 4 diff temp zones
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