molasses feed the beneficial bacteria that live in your soil. You can add it just to your water when you feed the plants. How are you growing right now? What kind of nutes, medium etc? You can make your own compost tea by brewing worm castings and guano for a few days and feeding the microorganisms with the molasses. Makes an excellent fast acting organic liquid fertiliser
well right now im using fox farm.. cause it was fast and easy right now. i have 1 150w hps 2 fans and happy frog soil.