with the heater...there is a way of setting them if they are old heaters that just have a twist knob on the top. (such as the old interpet with the green rubber top) what you do is put the heater in a tank or bucket that is sat at the temp you need. then twist the knob until the light comes on. then twist gently until light pops off. the thermostat is now set to the temp of the tank.
good luck. and well done on the rescue.
Sorry i somehow missed this post.
I am very sure you would have done the same thing to.
i dont suppose you fancy resealing a 6 footer for us lol :yes: