Grodan Rockwool Propagation Cube Tray - (77 or 150 Cubes)
Grodan Rockwool CUBE TRAYS. The rockwool cubes feature an outstanding air-to-water ratio, making them ideal for the delicate starter phase of plants. Grodan Rockwool Cube Tray. What the Grodan Rockwool Cube Tray is Used For.