TH, it would be hard for me to say, as I have not grown two Identical clones side by side, but then that would not answer your question. I think that Bud ignitor does make a difference, esp when used as Dub suggested in an above post, that it should be used as soon as the pistils start to show, or very shortly thereafter. Hope this helps, and I hope that you all have a great weekend!!!!:smokebuds: