A decade in the making, VBX is Hydroponic Research's ground-breaking soluble plant food and prebiotic. VBX goes beyond your average one-part nutrient and takes it a step further, combing multiple products into one effective easy-to-use solution. This nutrient solution contains an extra dose of calcium and magnesium for strong potent flowers. VBX is crafted in small batches using only the highest quality nutrients available.