House of hydro Mist Maker

Has anybody ever used these? Looking to raise the RH in the new veg room and these look great. Has anybody used these and how well do they work?

Yes, I ran one of those in a 2x4 tent when it was low RH. I don't advise it unless you run RO water strictly. I used tap and within a single grow it burned out. You would likely see better results with a normal humidifier.

They are fantastic but I have had trouble with the big one holding together, HOH was awesome with replacing bits that stopped working. When they work they are the best, but if you need one buy 2 as to have a spare around. I think of it as the Ferarri of humidifiers. Also, the Humidistats that he sells as controllers are the new standard in my room, I bought 4 to have a couple for future considerations.
About what water to use, what ever is in the water you use will b e floating around and collecting on all the surfaces in the room. So know what is in your water and act accordingly