I use molasses the whole cycle. 1/2 tablespoon/gallon every other in veg and 1tbs in flower. Like someone said it feeds the organic microbes which then feed the plants. I use hybrix and have always liked it. I have always used it so I don't know what it is like without it. My crops always smell real strong and have heavy resin and oils which I believe the molasses contributes to in addition to the general soil health. My dad to told me, "I don't grow the plants...I grow the soil." He taught me to grow making amended/super soil and never really feeding except molasses to keep the micro life going. I use Happy Frog for my outdoor super mix cause it comes in 2cuft bags. I've heard ocean is a little hotter out of the bag but personally think it's the same though. Roots organic is pretty good soil too. Much more airy/quicker drainage than FF. I use roots for my indoor mix.