PureHYDRO Mycorrhizal Fungi and Beneficial Bacteria is full of micro-organisms that work to increase the surface absorbing area of roots. This helps make mineral-based nutrients more available to plants. Microbe populations in hydroponics are diverse and equivalent to what is found in soil. Mycorrhizae play a key role in plant growth by forming a strong symbiotic relationship with the plant. One of the biggest areas that these beneficial bacteria affect is the roots. As a direct result of the increased nutrient uptake, the roots can become thicker, fuller, and can lead to even more nutrient uptake and a healthier plant overall.