OK, 1 cup is about 240 ml so 2 cups is 480ml, maybe too much but the girls seem to like it. The buds are popping well so far. I used molasses on a MG grow (miracle gro) and the buds got really puffy and thick.
I have noticed that I need to be careful on making sure the molasses is fully dissolved. That seems to be the key for me. No gunked up lines yet so we'll see.
Thanks all for the info and happy days
Buz