This 2-part (A & B) CoCo nutrient formula was developed for use with coco coir growing media in growing pots or bags. (non- recirculating systems). Atami CoCo liquid nutrient has been adjusted to the properties of the coconut substrate, it also contains natural compounds, humus-acids and fulvinic-acids through which the plant can optimally absorb all nutrient. Atami CoCo contains natural chelates, humic-acids and fulvinic-acids through which the plant can optimally absorb all nutrients. Use Atami Coco to fulfill both the vegetative and flowering stages of the plants life; there is no vegetative and flowering formula as there are with other Atami products, instead, you simply increase the amount of Atami Coco during the bloom stage and add PK 13-14 at the onset of flowering.