Canna Coco Natural is washed before packing but it is not pH buffered. Before use, we recommend Canna Coco Natural is rinsed and then soaked for a time in water which has been pH adjusted to 5.8. Canna Coco Natural contains no nutrients so plants rooted into it must be fed with nutrient which is ideally Coco-specific, such as Canna Coco nutrient or House & Garden Cocos. Coco-specific nutrients are formulated to provide more Calcium and less Potassium than other hydroponic feeds because Coco tends to absorb Calcium and release Potassium naturally. Canna Coco Natural can be re-used several times and disposed of relatively easily. Provides an ideal, moist and airy rooting medium. Environmentally friendly and bio-degradable. Easy to use. Free of pathogens and diseases. Allows very fast growth and a very healthy root system. Can be re-used several times. Can be used in re-circulating or run-to-waste systems.