Heavy Fire represents the ultimate hand-crafted P/K booster created through strict adherence to nutritional chemistry and biological principals. Heavy Fire is a versatile bloom supplement that can, because of its ingredients, be incorporated into any existing plant system and nutrient program. Starting Heavy Fire in the last one to two weeks of Veg and going through the entire bloom cycle with a gradual ramp will provide you pre-bloom support and will supply intermediate and late-phase Cascading Delivery TM of Phosphorous. Also, running Heavy Fire in the late phase of veg can provide for a larger, more resilient root mass, and create larger, and more branched foliage.