Add 27 is the world’s first specialized nutrient activator. It is a new nutrient additive by Dutchmaster designed to improve the effectiveness & performance of your regular nutrient program. Add 27 was developed to take your regular mineral fertilizer and through their special protein based chelating technology, deliver more effective and powerful nutrition to your plants. It accomplishes this by optimizing the rate of cytoplasmic streaming. This is a method of delivering minerals, enzymes, etc. to the plants cells. Add 27 will work with all types of growing media and with all types of nutrients.