PRO-MIX BKI AGTIV AMPLIFY is a biologically enhanced substrate that provides optimal structure and microbial activity in one mix. Built from a coarse blend of sphagnum peat moss and perlite, it delivers strong drainage and root zone aeration that’s ideal for cannabis plants in larger containers or longer grow cycles. The addition of AGTIV AMPLIFY — a powerful bacterial inoculant that helps unlock nutrients — helps to improve root vigor and supports plant health in both veg and flower. These beneficial bacteria quickly establish in the root zone for more rapid establishment, stronger nutrient uptake, and improved resistance to environmental stress. It's an ideal option for growers who want to combine consistent structure with biological depth. For similar structure and drainage with mycorrhizae instead of bacteria, check out PRO-MIX BKI AGTIV REACH. If a slightly finer mix that also includes mycorrhizal support fits your needs, the PRO-MIX BK AGTIV REACH is an excellent option.