[/quote]Or Try the Crab Island Heat Mat 4" X 5" for the plastic mini tanks they have out. It said household tape could be used with it and it's only 3 watts. So tape or Rubber band it around the outside of the water jar/canister.
Has anyone tried this? I have the Crab Island Heat Mat that I am now using on a small tank but will be transfering my crabs in a bigger tank shortly and got another UTH for the big tank.