[img]http://www.**********.com/iB_html/non-cgi/emoticons/confused.gif[/img] How do I keep humidity up in my greenhouse? I isn't really big, just 4' x 6'. I have an evaporative cooler but that is it. I live in Las Vegas. Right now lowest humitity is 38%. I grow some Nepenthes and a Heliamphora so I know I need it higher. I also have some of those humidifiers that heats of the water and releases it as a vapor. Should I use them?