"mogga" wrote in message
...
On Wed, 8 Dec 2010 08:37:01 -0000, "'Mike'"
wrote:

Have you checked ?

Mike


Yes and changed it.
Not that much ice considering how cold the greenhouse is. (-4.5)

A newspaper article suggested putting water for birds in one of those
silicone baking forms, like a loaf tin, because then when it freezes solid,
you can just squeeze it and throw it away easily and refill it.