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Products in the GEO™ line boost vegetative growth by 20-50% and plant root mass by 500-800%. Again though, make no mistake: these are not fertilizers. A fertilizer dumps nutrients into the soil for the plant to absorb at the root, polluting the soil and encouraging resistance in the plant in the process. By contrast, GEO™ products are biopolymer blends that facilitate the growth of a specific bacterial colony.