Rockwool MM 40/40 Delta 1.5 in Sq. (15) 3 Units
Rockwool Starter Plugs by Grodan 40mm X 40mm/ 15 X 3 Pack 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 you 45 total blocks each measuring 1.5" square.