Grodan Delta 4 Samll 3" strip of 8 Cal mag Important Set Up Tips: They

Important Set Up Tips: They work best when placed in each of 3 zones - below the canopy at the base of each plant

The wall fan's quiet

and higher yields

allowing for better absorption of bloom-boosting nutrients

Grodan Delta 4 Samll 3" strip of 8 Cal mag Important Set Up Tips: TheyGrodan 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