I put a red LED at the top of the stack, to accent the fog, but also to act a little like a warning light for very, very low flying planes...
I will eventually add two more pieces of plastic conduit to get the three smoke stacks, I might need to add a second vaporizer- but @$11 each, that's not a big deal.
https://www.amazon.com/AGPTEK%...s=24+volt+ultrasonic
Folks still remember this building and the milk plant operations. In the 50's it was converted over to a Fertilizer Plant. It's fun though to hear the old timers talk about watching the milk train and running through the building as kids. Imagine running through a factory now as an 8 year old...