Grodan Rockwool Grow Cubes (Mm 40/40) 25 Cube Sheet - 1.5 x 1.5 x 1.5 Inches
Rockwool Grow Cubes by Grodan are MM 40/40 1.5 x 1.5 x 1.5 inches. Individually wrapped small cubes for seeds and cuttings. These are sold in sheets of 45 cubes. For full case, order 50 sheets. Plastic wrapped rockwool cubes guide roots downward. You can set them on top of other rockwool cubes and slabs or use other growing media like Silica Stones for the roots to grow into.