Universal compatibility: The design of these growing sponges can work seamlessly with all awesome plant models and hanging garden hydroponics systems, ensuring a for indoor gardening settings. Optimized germination: These sponges have a unique microporous structure, which is excellent in moisture retention, balances the oxygen and water utilization rate of seeds, and significantly improves the germination rate. Increase plant yield: use our growth sponge to promote healthier root development, make plants grow sturdily and increase yield, making it an ideal choice for seeking maximum harvest. User-friendly design: just soak the sponge in water, put it in the planting basket, and then insert it into your hydroponic garden. Once the plants are out of the indoor system, these sponges are also easy to plant into the soil. Comprehensive Toolkit: Each package includes 50 excellent high-quality plant growth sponges to provide sufficient supply for your gardening project and consistent plant development and growth. Colour:As Shown Material:Planting Sponges Package Contents: 50 * Planting sponge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.