Cool mist humidifier?

[pleuro3]

Hello everybody. I need to boost humidity levels in my growing chamber (55 gallon aquarium). Currently I use a regular steam producing humidifier and I grow mostly Intermediate to cool pleurothallids so I'm having some temperature issues. Has anyone ever used one of these before or have suggestions to cheap ways of boosting the humidity that i can put on a timer for when I'm at work. (DIY contraptions are no problem)