In my experience with molasses I use about a tsp/gal, more than that and it can start causing problems (pH, EC, bacterial and mold issues, pests...) But I think it works pretty well, I have had some great results using it. I use it as soon as they are rooted and vegging, in low amounts of course. I use a 7-part soup at a certain part of flowering that does include molasses (favorably) in to the mix. My mama plants seem to REALLY like it and grow amazing foliage. I have found that I can feed my Mama's less than half of the rec'd nute amounts if I give them just a tsp/gal with no loss of vertical growth for cloning.