cturner: Welcome aboard! I followed your log and noticed the humidifier in one of your pics. I will be extremely pleased if my grow ends close to as well as yours did. Great work!

I really don't know enough to know if the humidity is too low at 45% rh. I understand that 50-60% rh is optimum. So, if 45% is close enough not to cause problems, I lean toward being passive.

Thanks for the advice. If it becomes problematic, I will definitely consider at least one of the options you offered.