Mykos Root Paks are conveniently packaged in biodegradable packets for use in hydroponic media and soil. Mykos pure mycorrhizal inoculum is Xtreme Gardening’s natural root promoter. Mycorrhizae increase the availability of nutrients and moisture required for plant growth, while improving soil structure providing a biological connection between roots and nutrients present in the soil. Mykos was used to break 7 World Records for plant growth, including a 2,000 lb pumpkin in 2012. Includes 50 packs.