I have a hut which is made out of two wooden boxes, insulated and covered with metal sheeting. Inside there is a wooden beam about three quarters up the box, with a 150watt ceramic heater hanging off, and pulse thermostat at the top. The lid of the box also lifts off, and has a clear panall so we can make sure my tort is in there in the cooler weather
At the mo the thermostat is only set to 12, and he has no extra heat, its only for end of march to around mid may really, and when it gets cooler in september/october
I will try post some pics soon
Jo x