Question About reservoir temperature

[GpsFrontier]

my thing is which would be better a cool mist or warm mist humidifier

What's the normal air temp in the room? If the air temp is on the high side, than cool. If the air temp is on the low side, than warm. However I'm not sure that they make humidifiers that put out cool mist because cool water (humidity) condenses quickly (dryer air output). 40% to 50% humidity is much better than 16%, but 70% to 80% is much closer to optimum greenhouse conditions.