Forget the molasses, it is BS and does not benefit your plant in any quantifiable way. It is an "old wives tale" perpetuated by hippies 50 years ago and should have died as a joke about 49 years ago. There is no scientific fact that molasses is beneficial to your cannabis plant.
The idea of giving sugar (molasses) to make sugar (trichomes) is utterly ridiculous. Molasses may have a miniscule benefit to soil microbes, but in the whole, the nutrient companies are laughing all the way to the bank by selling sugar water at highly inflated prices.
Giving your plants either fulvic or humic acid, (or both), will actually benefit your plant 1000 times more than any sugar water ever will.
Combine the fulvic or humic acid with an organic P/K booster around a 0/13/14 NPK ratio and this will actually enhance flower health and is scientifically proven.
Just follow the directions on the bottles and forget about molasses.
For those that do not believe me, do the research, the answers are easy to find.
And apologies to those that still believe in the Easter Bunny!
Hope this helps,........ Organoman.