Grodan Classic 30/75 Slab (wet), 12" x 3", case of 8 cloning-and-seed-starting Auto-prunes roots & prevents root

Auto-prunes roots & prevents root circling

Super high output lamp technology

Canadian Sphagnum peat moss

With energy efficiency reaching 2

Grodan Classic 30/75 Slab (wet), 12" x 3", case of 8 cloning-and-seed-starting Auto-prunes roots & prevents rootGrodan Stonewool (rockwool) is made from molten rock spun into cotton candy like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen