Get ready to step up your gardening game with the Hydrofarm 3-inch Net Cups. Using Net Pots allows the roots to grow through the mesh for better breathing and growth. Plants love net pots because they thrive on good air circulation in the root zone， exactly what net pots do best. You can use them with grow rocks or rockwool grow cubes. Get the growth you desire with the Custom Automated Products net pots. This particular net pot is 3" in diameter and is black in color. These versatile pots can be used either indoors or outdoors so you can find a use for them in almost any scenario. Use these pots with any of your favorite growing media to ensure even drainage and promote bigger， healthier roots!