Name: Anne Summerville, SC (Zone 8a) Only dead fish go with the flow!
I use 2ltr soda bottles painted black and filled with water for passive solar heating .. they collect heat in the daytime and release it at night .. I also heat both my GH's using a milk house heater on a portable thermostat and a fan at the other end of the GH for air circulation .. system works out really well.
Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.
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