Frozen Aquaroll

by Terry Tippett
(Nottingham UK)

In freezing weather with an outside water container...simply drop in a 150Watt fish tank heater into the container. Set the thermostat to 15C and all will be OK with the water in the morning. No need for a cover over the container.

This sounds like a good tip but remember you need to be very careful when using electricity outside, especially in the winter and in damp or wet conditions.