I have been using a Reptile One TerraHeat Heating Cable 25W in my chest freezer. Works a treat and is waterproof. You can go higher wattage but I found 25W to be sufficient for me (operated fermentation chamber in as low as 4C ambient over night). The 4.5m cord is coiled around a sheet of...
The Type 30 High Pressure Extension Hose https://www.kegland.com.au/type-30-high-pressure-extension-hose.html (KL06798) description fails to call out the length of the hose, could you please add that to the description.
I use a 25W reptile cord and PC fan in my freezer. Heat dissipates evenly along the 4.5 meter long cord. Bonus is the cord is waterproof, thus no chance of accidents in case of a spillage. The other consideration was that unlike halogen or (lesser extend) CFL lights there is no UV being...