Grodan Pro Delta 6.5 Block, 4" x 4" x 2.5", case of 216, Commercial nutrient-combo “It’s easy to tell when

“It’s easy to tell when your plants are supercharged

The bacteria consume the simple sugars of the molasses rapidly

Every material used in its production either meets or exceeds NOP standards

rockwool mini cubes

you can be assured of a high-quality product at a great price

Grodan Pro Delta 6.5 Block, 4" x 4" x 2.5", case of 216, Commercial nutrient-combo “It’s easy to tell whenGrodan 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