House & Garden Coco A&B base nutrients contain an extremely precise composition of a large variety of minerals. House & Garden Coco A&B nutrients are coco specific nutrients. They contain far less potassium than other nutrients to take into account the high levels of potassium released from the coco media during the growing cycle. The special composition of the nutrient solution leaves the water reservoir pure and keeps it fresh. At the same time it provides an excellent balanced nutrient, ensuring optimal absorption at the root zone and delivering maximum growth potential.