Char Coir BioPotThe Char Coir BioPot is designed for the vegetative and flowering stages in the same container. No external container is needed, since the BioPot is wrapped in a fabric exterior, with compressed coco coir inside. This is one of these easiest ways to use our high quality substrate for your growing needs. 100% coco coir RHP certified Buffered Very low EC, less than 0. 6 Free of pathogens Stabilized for proper PH 6. 0 6. 5 High cation exchange capacity