HGA Garden offers organic cuttings made from a mixture of coco substrate and soil for optimal germination of seeds or rapid rooting of cuttings. These blocks have excellent absorption capacity, are organic and recyclable. Specifications: Air/water ratio: 20/80, block size: 7.5x7.5x6.5cm, EC: 1, pH: 5.8, weight of dried block: 35g. Packed in a box of 160 pieces.