I would not worry about it.

If you wanted to experiment, you could try heating it and
see if you like it, but you would probably eventualy skip it.

If you heat it, nice and warm, you will increase
denitrification, because the increased warmth will
increase bacteria growth and resperation.

In the tropical environments, in warm water, the
temperature will be cooler as you go deaper in the sand.
It's like when you pull ground water up from a well in a
warm area, the water will be cooler. Here in Central
Florida, the well water is around 75 year round.

Down in deap ocean, the water is cold. I don't know of any
studdies of temperatures taken deep in the sand under the
ocean, other than hot vents.


Wayne Sallee
Wayne's Pets



Pszemol wrote on 1/30/2006 6:54 PM:
"RicSeyler" wrote in message
.. .

Never heard anything Pro or Con about lower level of DSP being a
different temp.
But you DO want that oxygen-free area at the bottom of the DSB.


Yes, oxygen-free is something different. I am talking about the
temperature.