Dutch Master Add.27 Grow & Flower is the worlds first mineral and amino acid based Plant Additive that optimizes your nutrients. Unlike mineral-based fertilizers, ADD. 27 is designed to take your regular mineral fertilizer and, through Dutch Master's special protein based chelating technology, deliver a more effective and powerful mineral nutrition, via optimised cytoplasmic streaming, at the time it is most needed - unlocking your nutrients real power and ADDing power to your results.