Hydrofarm Growt GMC25L 25 Liter Bag, 4mm-16mm Clay Pebbles, Brown, 25 L Bag - Brown
From Macy's
They are clean, pH stable, and offer great aeration and drainage in hydroponics, especially in flood and drain, deep water culture, and drip feed systems. They offer the ideal environment to foster beneficial bacterial growth around the root zone, leading to naturally healthier plants.
