I'm trying to figure how much might evaporate during the winter - assuming I keep ambient temps the same as growbeds - does anyone have a guess at the percentage per day that gets evaporated / transpired? 2%, 5%?
I'd like to know for the purpose of sizing the heat load... ex. how much new cold water get introduced into the system in a 24 hr period?
Paul, there is so much variation in what you are asking that I do not know if anyone will be able to come up with a easy answer. The only system I know of that has published water usage data is the unheated UVI system, which is open air and thus of little use to your situation. They went through roughly 2% a day if I remember correctly.