Went ahead and ordered the Noctua PWM controller, some cable splitters and cable extensions. That will arrive next Monday. Two of the fans will arrive Tuesday, the other two will not arrive until Weds. 27th... Darn! This should be the last tweak I needed to make before my chamber is exactly how I need it to be. Will have independent control of all three major variables-Temperature, Humidity, AND Air Flow! I am excited to see this project completed!!