FoxFarm Bush Doctor Microbe Brew Microbial Inoculant 1-0.3-0.2 | 16oz - Concentrate

Rapid Root-Zone Microbial Colonization, 16oz

A healthy population of root-zone microbes helps a plant take up nutrients more efficiently, but building that population from scratch takes time unless it's actively encouraged. FoxFarm Bush Doctor Microbe Brew 1-0.3-0.2 is a liquid microbial inoculant with a complex blend of ingredients formulated to speed up microbial colonization at the root zone, supporting root efficiency across soil, soilless, and hydroponic systems.

The 16oz bottle gives growers a low-commitment way to evaluate Microbe Brew before working it into a full-season feeding program.

Key Features & Benefits

• 1-0.3-0.2 NPK — a low-rate nutrient base layered alongside the product's microbial ingredient blend.
• Liquid Microbial Inoculant — aimed at speeding up colonization of beneficial microbes at the root zone.
• Multi-Stage Use — can be applied at more than one point across the growing cycle rather than a single application.
• Broad System Compatibility — labeled for soil, soilless mixes, and hydroponic growing environments.

Who Should Use Microbe Brew 1-0.3-0.2

Cultivators who want to build up root-zone microbial populations at multiple points in the growing cycle, across soil, soilless, or hydroponic setups, are the fit for Microbe Brew.

About FoxFarm Bush Doctor

Microbe Brew is part of FoxFarm's Bush Doctor line, produced by the Humboldt County, California, company that has manufactured fertilizers and soil products since the early 1980s.

Frequently Asked Questions

What is the NPK ratio of Microbe Brew 1-0.3-0.2?

It carries a 1-0.3-0.2 ratio, a low-rate nutrient base that sits alongside the product's complex blend of microbial ingredients. The nutrient load is intentionally light since the product's main role is microbial, not a primary feed.

When should Microbe Brew be applied during a grow?

It can be used at multiple stages throughout the growing cycle rather than a single point. Follow the FoxFarm feeding schedule for recommended timing and rates.

Is Microbe Brew compatible with hydroponic systems?

Yes, it's labeled for soil, soilless mixes, and hydroponic growing systems alike. The same concentrate works across all three without a separate hydroponic-specific version.

What sizes does Microbe Brew 1-0.3-0.2 come in?

It's sold as a liquid concentrate in 16oz, 32oz, and 1gal sizes, so growers can match container size to how many plants they're feeding. This 16oz size is the smallest of the three.