Works well with any nutrient line. Just apply it once about three weeks before finish for results than can't be duplicated by any other product. Watch as flowers become denser and tighter than ever before. Gravity is unlike any other flower-finishing product on the market. Gravity fills out flower clusters and increases total flower mass without interfering with flower scent and color. Based on natural ingredients, Gravity is the brother of Bushmaster, the popular plant height controller used at the beginning of flowering. Like Bushmaster, Gravity is recommended for flowering plants and not fruiting plants like tomatoes and peppers due to fruit drop.