keep water temp under 78 degrees, never shut off pump, i use humic tea, and g-rex from cutting edge solutions also keep air circulating on them. I also spray with a lite clonex feeding solution and hum tea. i just got done clonging 30 in my ez clone and 29 out of 30 were perfect. i found that cutting the end of the stem in half and scraping the side of the bottom of the stem worked best. got heavy roots in 7 days. good luck