You may also want to try solar. Could you put clean, empty drums that have
been used to transport liquid, inside,along the north side and around the
south side of the green house? You could paint them green or black so they
wouldnt be so unsightly, and cover them with wood to make them into a bench
or shelf. Fill them with water once you have them set where they would
gather the most sunlight during the day time. You would be surprised at how
much warmth they will provide at night. Good luck. Dwayne


"Mike Deblis" wrote in message
m...
Hi,

I'm the under-gardener at our house, i.e. I get all the nasty jobs,
and I would appreciate some advice...

We've recently invested in a 10x14 greenhouse that has a cedar frame,
re-inforced glass & aluminium guttering etc. I have run a (protected)
240V supply to the greenhouse.

The north side is close (3ft) from a tall dense hedge, the East is
protected by a timber barn, but the South & West are exposed - we are
on a high hill in Kent. I have insulated with 1200mm wide bubble-wrap
(9mm cell size).

We have a load of tropical plants in the greenhouse - some fairly
hardy orchids, tamarinds, cactii etc.

Now I have some tubular greenhouse heaters - Can anyone recommend a
supplier for a good frost-stat? Will I need a fan to circulate the
heat? Would it be better to buy a small (water resistant) fan heater?
If so, where from?

Am I completely on the wrong track (I'm an electronics engineer, not a
gardener)?

Many thanks,

Mike