I posted this as a reply to another thread about a month ago. I realize my reply wasn't very clear when it comes to the term 'humidify.' The humidifier below produces the same fog as the untrasonic foggers.
Why use Ultrasonic Foggers at all?
You could buy a humidifier from Walgreens (or another store) for 20-30 dollars. You can then use PVC tubing to distribute fog to all, or most of your tanks. I use mine to keep my large (2'x4'x6') water dragon enclosure humid in the 10-15% desert environment. They do use ultrasonic humidifiers, but they seem to last a long time. I've been using mine for 2-3 years without any problems. Then again, I only use distilled water (it holds 1 gallon of water). With daily use of 3 hours, it will go through 1 gallon in 2-3 days.
http://www.walgreens.com/store/product.jsp?id=prod395405&CATID=100288&skuid=sku395406&V=G&ec=frgl_809976
Look for humidifiers that use 'ultrasonic technology.'
The only disadvantage is you can't house the fogger directly in the tank, but this is dangerous anyways.


