i got mine about a month ago, i use 1 pound in my 150qu igloodor and i put a half a pound in 3 film vials (no top) in the bottom of my humidors and they work like a charm... give mike at bargain humidors a call, he will walk you through and questions you have, he is good people!!
I love my Climmax humidifiers... I use the Respiracion de la Habana 65% RH units. I have 2 units in each of my 115 qt Igloos and they work like a charm! I also have the Premier Humidifier and some Stick humidifiers in my 100 ct Humidor and it's great too!
The Climmax Humidification Media is the BEST I've ever used and swear by them! As mentioned you can get them from www.bargainhumidors.com or go to the man himself.... Bruddah Vern at www.climmax.com
I go straight to my Bruddah Vern.... excellent service and a GREAT guy to deal with! Truly an asset to CPers and to cigars!