hydrokorrels 5l 8 16mm en5 liters of hydro granules, as a garnish for your flower pot With Green Boutiq hydro granules, you can fill your decorative pot well for an extra natural look. Fill the bottom of the pot with grains. When you place the artificial plant there, it should be just below the edge. If the plant is upright and firm, fill the rest of the pot with the grains. We sell our hydroelectric pellets in 5 and 10 liter bags. For POTS in sizes S and M, a 5 liter bag is