CANNA 9410901 Coco part B 1-liter is part of a complete 2-part nutrient for plants during the growth and flowering stages. CANNA Coco part B is composed of high value minerals, humic, and fulvic acids which gives the plants optimum nutrient absorption. This Coco nutrient works wonderfully when used in combination with a quality coco medium like CANNA Coco. Coco nutrient and media works best with run-to-waste or simple hand watering. Coco part B is easy to use. Just add part A first in the water then add an equal amount of part B, mix well and water your plants.