I just bought the Terra Vega this past weekend for my mommies. I'll let you know how they like it. I had planned to do the Bio (organic) but the shopkeeper made the good point that the Bio, with its heavy load of organic acids, is meant to be used on plants that are growing rapidly and potted-up on a schedule suited for plants destined to be flowered, and that for managing mothers, the chem stuff would be better.