Grodan Classic 30/75 Slab (wet), 12" x 3", case of 8 led provides a good base for

provides a good base for fast root development and decreases the number of times you need to water compared to clay pebbles

This model is for 120-240V operation

(1) Hard n Quick

which leads to greater root growth and less water usage

Grodan Classic 30/75 Slab (wet), 12" x 3", case of 8 led provides a good base forGrodan 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