The Cyclone (24"� x 20"� x 8.5"�) is a true cloner with realistic spacing between each site. The wider spacing allows every site to be used at once. Cuttings are held in place by a re-usable foam insert. Most plants will root in 5-7 days with a 95%-100% success rate. Every system comes with a variable speed 2 outlet air pump. Maximum oxygen levels are achieved. The variable speed gives you total control. Comes in 42 or 84 Site.