On Thu, 02 Nov 2006 16:01:27 +0000, Neil wrote:

Any idea whether this looks rodent-caused?

Definately rodent and probably rat but difficult to tell without anything
of known size to scale the gnaw marks by, could be squirrel I guess as
well. You've had a lucky escape, so far, in that it's slow leak and not a
proper hole...

and perhaps more importantly whether the tank should be replaced...

Replace, they are cheap and whilst you are at it fit a proper Byelaw 30
kit, or at the very least an insulating jacket and lid.

--
Cheers
Dave. pam is missing e-mail