Hello everyone I would so love to add snow machines to my display this year, Im thinking about ordering 2 from American DJ, I think they run $129 or so, during the display they should run about 30 seconds every 20 minutes or so. Display runs from 6:30-11:30PM Nightly minus of course the inclement weather days. Does anyone know enough about these to where they could tell my how often I'm going to have to refill these, the amps, the cost of refills and if you think all around its a good idea. I already have encloser boxes for these and they WILL work because the ones I built for my lasers last year did excellent. Thanks for your help!!