Yeah the heat loss from the block must be a lot. I stuffed some fibreglass lagging in front of the block and it helped raise temps by 2 or 3 deg. Not a lot but it helped all the same.
I can't imagine a 1kw heater is very long. Depends on its intended use i guess. I'll look around.
I still like the pump idea though, might just try it and see. If only to show it doesnt work!
ollie
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