CYCO Bloom A, 20 LiterCYCO Platinum Series Bloom A CYCO Bloom A is the first of the two parts to make up the base nutrient system for the flowering stages of a plants growth. CYCO Platinum Series Bloom A is a primary source of nitrates which are vital for photosynthesis, the making of aminco acids, enzymatic formation, and cell division. Bloom A also contains calcium. Calcium in CYCO Bloom A is derived from calicium nitrate for a source of readily available calcium to form