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Tom Barr wrote:
"I had the cables
on/off for 15 min intervals with basic 2-3mm sand laterite mix at 4
depth and 2 watts a gallon/CO2."
Where you able to notice convection?
I would have thought that the cables needed to be on longer than that
to develop enough local heat for convection to occur. I know in plain
water, a cable feel very warm if its been on for only 15 minutes. But
of course, it depends on the watts/length of the cable.
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