Adding Molasses to your soil feeds the microbes in the soil. It doesnt necessarily do anything to the plant. I wouldn't use Sugar, Molasses is the go to product instead. half the people swear by it and the other half swear against it. I wouldn't recommend it for a hydro setup. I use a teaspoon per week in my grow while others have said they only use it once or twice a month. Don't go to a hydro store looking for a carb booster, instead to to a grocery store and pick up Molasses for under $3.
