Plant Food Activator ( 1.0 - 0.3 - 0.2 ) Bush Doctor® Microbe Brew® is a liquid suspension microbial inoculant with a complex blend of ingredients specially formulated to help plants achieve optimum microbial habitats at the root zone. Microbe Brew® contains concentrated amounts of fungi and bacteria spores that will encourage large populations to colonize at a rapid pace. Microbe Brew® includes organic micronutrients that will feed your plant and microorganisms as well. Microbe Brew® can be used in both hydroponic and soil applications. Use Microbe Brew® on your ornamental flowers, evergreens, vegetables and trees. For optimal results, follow the FoxFarm feeding schedule.