Mills Nutrients is designed, manufactured and bottled entirely in Holland. Made in the fine Dutch tradition of an easy to use two part base along with additives that provide your plants with everything they need and nothing they don't. Mills is one of the first to develop bio-mineral plant nutrients utilizing the best of both synthetic and organic sources optimizing growth rates, yield, flavor, and aroma. The success of our bio mineral formula was realized only after thorough research in the field with both large greenhouse and hobbyist growers alike. Years of trials and tribulations have led to a complete small lineup of products of unprecedented quality providing all the nutritional elements needed; Basis A , Basis B, Start-R, C4, and Ultimate PK . These products unique composition allows growers to use the entire line in all grow mediums. Unlike completely synthetic nutrient lines which can build up in or on top of the soil, Mills Bio Mineral formula does not accumulate in the medium giving the grower a tremendous advantage when pushing his/her plants to the limit.