This beneficial bacterial formula works great in soil, soilless, and hydroponic systems. Using MAMMOTH P in hydroponic systems is an excellent way to introduce the organic benefits of soil microbial nutrients without sacrificing water quality. MAMMOTH P was engineered to supplement any fertilizer program. MAMMOTH P is specifically designed to increase phosphorus availability during the bloom phase, and should be used as a supplement to your regular fertilization program. Application during clone and vegetative phase will boost effectiveness.MAMMOTH P has a near neutral pH formulation and runs clean in any system. Our bacteria act as micro-bioreactors, constantly producing a more diverse suite of enzymes that enhance nutrient availability than the leading enzyme-specific products.