You can buy a ready made Mist-King system from just about any frog supply store. Or make your own with a diaphragm pump and plumb it with polyethelene tubing and buy the misting nozzle from a frog supply store. It's hard to answer you better than this without a better description of your application. I make all my own except one that is a Habbi-Mist but it isn't really enough to do a good job.