yes you are correct, anything less than 1/2 will not work, i ended up using the 3/4" elbow at the bottom (the black one in the pic) so that when it did condense it would drop back down into the res.I used two peices of pvc to cap off mine and then drilled the cap for a peice of hoseing simple and cost me me less than 3 bucks. Only problem i am having is the 3/8th hoseing i am useing the Water condenses and plugs the hose. Tube needs to be bigger and it should work fine.
that is a recip solenoid, produces 20 bar of pressure that i use to power my misting system(used in expresso machines). i just pull off the humidifers res for the water that i mist with.Thanks for the pic.. like that option for attaching the hose..
BTW.. is that an automatic power/solenoid you've got hooked up next to it?