eh the reptifogger is not really worth it imo many retailers get them back. if it were me i would go say 2 options are better, 1st choice is http://www.mistking.com
you would be much better off with the 99$ system. 2nd if you want a ultrasonic fogger then id say getting it from ebay $26 then get a waterproof cpu fan, and some pvc. pvc needs to have the fogger sit inside of it the fan can be push or pull the fog doesnt really matter (just have it wired so u can control the fan speed) use T's and L's to customize your outputs for where u want the fog.
doing it with the fogger in the tank allows u to use the false bottom which really helps and uses all that water as an active reservoir which will allow for much greater time befor refilling.