Large Rock Wool Seedling Blocks for Soilless Cultivation, 7.8 pH, 50x50x40 Size

These seedling blocks are designed for soilless cultivation, offering a reliable and efficient medium for starting plants. With a stable pH level of 7.8, they provide an optimal environment for healthy root development. Measuring 50x50x40, they offer ample space for seedlings to grow and thrive. Ideal for hydroponic systems, these blocks are crafted from rock wool, known for its excellent water retention and aeration properties, ensuring your plants get the best start possible. Type: Mineral wool Water absorption: 100 Weight: 10 pH: 7.8 Package: Bulk Scope of application: Hydroponics Manufacture country: China Instructions included: No