I won't be rooting clones for a while but I will use Propogation Plus early on after rooting clones regularly and also on seedlings to give the roots a boost. The producer of propogation plus had an old smoker Botanist get him into his own nute line which I'm sure he made a boatload of money from, I actually prefer his line over AN, less problems better quality. I never would have tried it but I got a small sample bottle along with several others to try, the stuff turned out to be good. The product claims to have some 60 plant root hormones I think thats probably the the difference.