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Old 08-02-20, 11:45 AM   #8
WillyP
Lurking Renovator
 
Join Date: Jul 2020
Location: Virginia
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[QUOTE=gadget;62912]The other problem with oil is messy leaks. There will always be a leak at some point.

I ran an open tank hot water setup in my greenhouse a few years back. Water temp was 100F.



So in you system how did you heat the water? Did it just reach 100F by being in the greenhouse? Or was there some sort of heater?
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