I think it was overkill....too much of a good thing, as the saying goes! I too am cloning 2 plants the first showed roots this am and the other I just checked and it has some out one side, all in all I only lost the one I figured it wouldn't survive but it was worth a try....lol I did all this without a heat mat but maintained a temp of about 80 most of the time and gave them 4-6 hrs of darkness I feel that helped alot, I now know I don't need the dome anymore, ty to the posters from this thread....was wondering if I could ditch it! Best of luck next time, don't give up keep on trying...and ph spring was what I feed them btw