Re: [APD] Re: Substrate Heating

["S. Hieber" <shieber at yahoo_com>]

More likely is the hsubstrate will be slightly warmer than
the water above but heated more or less evenly, especially
with low wattage coils running for long periods of time.
Water is pretty good at transfering heat.

Scott H.
--- Rachel Sandage <rachelsor at hotmail_com> wrote:

> Bill said,
> 
> "If you distribute the heat evenly then you won't get
> convection currents. ...If you evenly heat the entire
> substrate, the water won't move since there won't be any
> localized areas of hot/cold."
> 
> So you would have a warm layer under a cold layer?
> 
> rs
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