Grab one of these: http://www.trademe.co.nz/home-living/food-beverage/other-beverages/auction-536578184.htm or
http://www.trademe.co.nz/pets-animals/fish/other/auction-536232577.htm
All you need is a little plastic box and a 2m extension cord to wire it all up.
You can then attach the temp...
Hey
I'm german born, now living in chch.
Have been brewing beer for about a year now. Am getting some good results on kits.
Keen to get into AG at some point...
cheers