I also bought this humidifier from Walmart after searching all over for a humidifier that vents from one specific spot rather than a general area.
I chose to do the fogging system this way because I read too many bad reviews on the Repti-Fogger, and also because this can run for 18 hours before being refilled. I was having a problem with it shutting off after a few minutes, but I think that was caused by the fact the my tubing was too long, so on its way to the humidifier it had to make a turn back up, allowing water to build in the line. I think that the humidifier was sensing a block and shutting itself off. Now that thats figured out, its been running perfect for the past 2 months, and the nice thing is that I can put a gallon of water in it and that lasts me about a week, so I have it on a timer and dont even have to think about it