Roy wrote I wll have to repeat this once it
gets into the winter season here and see just how low my bottom temp
is then as compared to the upper levels.

Just don't fall in! ;-)


kathy :-)
algae primer
http://hometown.aol.com/ka30p/myhomepage/garden.html

On Sun, 5 Sep 2004 16:06:05 -0500, "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.

Ah, yes, but the coldest water rises since it expands just as it
approaches 32*F. As it freezes the ice floats to the top and then
forms an insulating layer on the pond, especially with a little snow
on it. So within the pond there is a natural circulation.
I am not disagreeing with your point, just amplifying the physics of
the circulation.
The greehouse sounds nifty.
--
Crashj
--
Crashj

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

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

Point well taken.

Jim

--
____________________________________________
See our pond at: home.bellsouth.net\p\pwp-jameshurley
Ask me about Jog-A-Thon fundraiser (clears $120+ per child) at: jogathon.net

"Crashj" wrote in message
...
On Sun, 5 Sep 2004 16:06:05 -0500, "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.

Ah, yes, but the coldest water rises since it expands just as it
approaches 32*F. As it freezes the ice floats to the top and then
forms an insulating layer on the pond, especially with a little snow
on it. So within the pond there is a natural circulation.
I am not disagreeing with your point, just amplifying the physics of
the circulation.
The greehouse sounds nifty.
--
Crashj
--
Crashj

Point well taken.

Jim

--
____________________________________________
See our pond at: home.bellsouth.net\p\pwp-jameshurley
Ask me about Jog-A-Thon fundraiser (clears $120+ per child) at: jogathon.net

"Crashj" wrote in message
...
On Sun, 5 Sep 2004 16:06:05 -0500, "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.

Ah, yes, but the coldest water rises since it expands just as it
approaches 32*F. As it freezes the ice floats to the top and then
forms an insulating layer on the pond, especially with a little snow
on it. So within the pond there is a natural circulation.
I am not disagreeing with your point, just amplifying the physics of
the circulation.
The greehouse sounds nifty.
--
Crashj
--
Crashj

On Mon, 06 Sep 2004 02:40:32 -0400, KenCo wrote:

Jim and Phyllis Hurley wrote:
Cold water sinks.

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.

Crikeys, mate, where is he going to pile all that dirt?! Should work,
though; permafrost in Alaska probably isn't that deep.
;-)
--
crashj
--
Crashj

On Mon, 06 Sep 2004 02:40:32 -0400, KenCo wrote:

Jim and Phyllis Hurley wrote:
Cold water sinks.

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.

Crikeys, mate, where is he going to pile all that dirt?! Should work,
though; permafrost in Alaska probably isn't that deep.
;-)
--
crashj
--
Crashj

On Tue, 07 Sep 2004 03:57:00 GMT, Crashj
wrote:

===On Mon, 06 Sep 2004 02:40:32 -0400, KenCo wrote:
===
===Jim and Phyllis Hurley wrote:
=== Cold water sinks.
===
===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.
===
===Crikeys, mate, where is he going to pile all that dirt?! Should work,
===though; permafrost in Alaska probably isn't that deep.
===;-)
===--
===crashj


Heck that dirt has long since been utilized elsewhere that I removed
form my pond when I dug it...I went deep as I always hated seeing the
typical ponds in this area that are usually only 4 or 5 feet deep,
looking so bad when they start to loose water with evaporation and
rely on rainfall to fill. I went deep for more water, cooler water and
more capacity.
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