Your water temps are too hot. 70-72 is best. Your ez-cloner needs a smaller pump. Don't scar the stems. Here's a thread that I started about the subject. It starts off slow but the info is invaluable.
http://www.icmag.com/ic/showthread.php?t=38560
http://www.icmag.com/ic/showthread.php?t=38560