WAY TO GROW PROFESSIONAL COCO is aged for six months then washed & buffered with Calcium & Magnesium. Every batch is EC & pH tested & batch samples are kept on file for future reference. It is pH balanced & contains trichoderma mould for root protection. No environmental disposal problems (when finished, just use as outdoor garden top dressing) & lowest miles travelled from factory to end user. Contains no harmful bacteria (unlike potting mix) and is pleasant to work with. Suitable for all hydroponic crops & plants.