Jim and Phyllis Hurley wrote:
Cold water sinks. In the winter, the top may freeze, but the bottom will be
cold if you don't circulate. The ground, however, will heat the pond as
compared to the freezing air. Earth is essentially your
buffer/insulator/stabilizer in both summer and winter.



the ground is 50-55F at 4-5' depth and thats why
water pipes are set a 4-5' below ground depending
on what zone your in.


his 21' depth is assuring it will never freeze.



Jim's brother made
an eco house that cools in the summer from the earth and stores winter sun
in milk jugs of water. Heating and cooling are accomplished by reversing
the fan that blows the air. One fan!

Phyllis



--
http://www.kencofish.com Ken Arnold,
401-831-5739 cell 401-225-0556
Importer/Exporter of Goldfish,Koi,rare Predators
Shipping to legal states/countries only!
Permalon liners, Oase & Supreme Pondmaster pumps


Linux (SuSE 8.2) user #329121
Please Note: No trees or animals were harmed in the
sending of this contaminant free message We do concede
that a signicant number of electrons may have been
inconvenienced