100 Pcs Grow Sponges, Replacement Root Growth Sponges Seed Pods Compatible, Black Sponges for Hydroponic Indoor Garden System

About this item Planting Sponge: Seed activation sponge has a balanced pH value, good water absorption and moisturizing ability, providing the seeds with a perfect balance of oxygen and water, allowing them to reliably germinate and root Seedling Sponge: Black hydroponic sponge is made of 100% biochar cotton, with added bamboo charcoal powder, effectively improving the fertility of the sponge and promoting the growth rate of plant seeds in the juvenile stage High Compatibility: After soaking, the size of the growth sponge is 2.56 * 0.9 inches, which will be compatible with most brands of hydroponic growth systems, used with seedling trays and potted plants, and planted in indoor gardens Professional Growth: There is a small hole at the top of the seed pod, and the seeds are placed in the small hole, which is not easy to fall off. Sponge hole promotes water circulation and maintains a certain humidity; Please soak the sponge for 3-5 minutes before use Widely Applicable: Root growing sponge, not limited by geography and season, can be used to grow various types of plants in indoor hydroponic gardens, such as strawberries, tomatoes, basil, mint, herbs, flowers, lettuce, etc