Thanks for your input. However, I'm not too interested in using the frozen water jugs. Firstly cos they take up a lot of valuble space. But also the melting of the ice causes condensation on the bottle(s) which pulls valuble moisture from the air.
In the old days I had a Window AC with a 4" fan and dryer hose connected to the output. Before the dryer hose got to the grow chamber a hose from the output of a 2 gallon ultrasonic humidifier intersected it and humidified the incoming air. Humidity inside was controlled by a humidistat. I was just hoping to not have to go to quite these extreme lengths for "normal" temp tropicals and orchids.
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