Grodan Rockwool Cubes (45) 1.5" Mini Blocks

Stonewool is recognized the world over as the ideal hydroponics growing substrate. Grodan stonewool is known for its quality, consistency and performance. These Mini-Blocks are excellent for starting seeds and cuttings and are easily transferred to larger stonewool slabs once roots have been established. Three strips of 15 wrapped Mini-Blocks give your customers 45 total blocks each measuring 1.5" square.