At the heart of Grotek's line is the essential NPK that provides the foundation for their multi-product formula. Coreis based on plant matter, which provides key minerals but also high levels of humates and other plant and mineral derived metabolites. This formula can also be used to feed and support soil biology, increasing availability and uptake of nutrients essential for plant growth. Just like the rest of the Grotek liquid organic range, Coreis suitable for all types of growing, from outdoor gardens to water-based hydroponic systems.
