Grodan A-OK Starter Plug 1.5" 98/sheet Hydroponics Warms root area 10-20°F over

Warms root area 10-20°F over ambient temperature to improve germination

6 foot power cord

essential oils and key metabolites

Handles hot water up to 180 degrees

Grodan A-OK Starter Plug 1.5" 98/sheet Hydroponics Warms root area 10-20°F overGrodan 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