wrote in message
...
I had both 100 gallon rubbermaids and 144 gallon galvanized in my basement
one winter
and the rubber ones held the heat much better than the galvanized.
difference
between a conductor and an insulator. Ingrid

"BenignVanilla" m wrote:
This sounds like one of those super-cooling threads. I wonder if the
Rubbermaid and the steel would really show different temp fluctuations.
How
much water are we talking about? Didn't the OP say 750 gallons? I'd think
750 gallons would not be very affected by a thin wall be it plastic or
metal.

Wow...I didn't think such a thin layer of any material would matter, at
least not with that huge body of water behind it. In my mind I was picturing
that middle-school science experiment, where you can't set a paper cup full
of water on fire, because the water takes the heat away.

Ingrid, have you ever compared temps to see how different the are? Is it
extreme?

BV.