In article ,
Will wrote:
It might be possible to remove the top one and replace it with a full
length type - they're cheap enough.

The only problem here is that where two immersion bosses are
fitted, they are - ime - always mounted in the side of the tank. So
even if the tank were large enough to fit a longer element into in the
horizontal plane, it would make no difference to the volume of water
heated...

Right. I assumed the top one was in the 'conventional' position.

--
*Funny, I don't remember being absent minded.

Dave Plowman London SW
To e-mail, change noise into sound.