Your question brings up something I've been thinking about with regard to evaporation from the tank. I've been noticing more evaporation occurring now that the weather is getting cold and the heat is on. Makes sense.
So I would think your Xmas tree would benefit by being close to the tank, and drinlking up some of that evaporative water.
I started thinking about this because I was dreading getting my humidifier cleaned and set up for the winter season. It's one of those drum types that cakes up with calcium and rust and has to be scrubbed and scraped every year to become functioning again.
This year, I say the heck with it. I figure with my tank evaporating 2-3 gallons of water a day, that's got to be almost as good as that inefficient drum humidifier.
Spin