I use molasses to. Currently I keep a big barrel going with a mixture of water, earth worm castings, and molasses, with an air bump bubbling it. This is what I water my plants with every time, it's not super strong, since it is every watering. They get side dressed with organic amendments also.
I have had problems before from over doing molasses though. I was just adding it to the watering can, and adding kind of a lot, maybe a 1/4 cup per 2 Gallons, and using every watering, also was getting some on the stalk and the lower leaves. Well, I started seeing this black suitey mold growing on the lower leaves, same thing that grows on the honey dew that aphids excrete. I am pretty sure that's what it was, just living off all the sugar. I have not had problems since I started using the bubbler, and I don't think adding a table spoon per gallon to the water once a week, will cause it, but definitely don't go overboard like I did.