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Grotek’s nutrients, a Greenstar Plant Products brand, has been providing growers with quality science and exceptional results for over 20 years. Our high-performance products have earned the trust of both hobby and commercial growers worldwide. Grotek has been an industry pioneer, combining key organic extracts with mineral fertilizers, giving growers the opportunity to vastly improving harvest quality. The main focuses at Grotek are to create innovative solutions from initial research, through to a concept, and all the way to an ef ...