Ahhh....I think I just rectified that situation. I am temporarily using a spare fan and I had it blowing air from the outside onto the roots(dry air). Duhh....I turned it around and I'll be sure to make sure its sucking air when I install the permanent fan. That way it will pull the more humid air from the water feature.
I'm going to put a vent above the waterfall so that the fan on the other side will be pulling fresh air there. I'll experiment and check the good old humidity gauge.
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