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

while promoting more blooms and spectacular colours versus unfed plants

Indoor and outdoor use

You can fill them with Hydroton clay pellets or the small rockwool cubes

essential oils and key metabolites

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