OFFCUP Rockwool Grow Cubes, 40x4x040mm 56-Holes Seed Plugs for Hydroponic

• 【Set Contents】We offer a variety of sizes to meet your different planting needs: large rockwool blocks (4×4×4 cm) and small rockwool blocks (2.5×2.5×2.5 cm). These rockwool blocks are suitable for seedling cultivation, cuttings, and cloning, and are ideal for modern hydroponic systems and greenhouse cultivation.
• 【Natural Material】The rockwool substrate is made from basalt through an inorganic fiberization process, resulting in a soft, uniform texture free of soil and impurities. It boasts excellent water absorption, aeration, and a stable pH, providing optimal conditions for seed germination.
• 【High Water Absorption】The rockwool planting blocks have a special porous structure that allows for rapid absorption of nutrient solution while maintaining a stable oxygen supply. This ensures an optimal balance between high water retention and good aeration, reducing the risk of root rot and promoting seed germination and root development.
• 【Easy to Use】Due to their pre-cut cubic shape, the planting blocks are ready to use immediately. Simply soak them in water, place seeds or seedlings in the solution, and plant them in soil once they germinate. Ideal for gardening beginners and school projects.
• 【Versatile Uses】Our rock wool planting blocks fit into pots of any size. Save space for growing tomatoes, herbs, strawberries, cucumbers, and other flowering vegetables in greenhouses. You can also use the planting blocks in your garden or as indoor potted plants.

Product Features 1. Rock wool provides a stable, sterile support environment for seed germination and seedling growth. 2. As a growing block in hydroponic systems, it allows plant roots to develop healthily without soil. 3. Standardized, modular rock wool blocks enable vertical planting within limited space, significantly increasing yield per unit area. 4. It is also commonly used as a substrate for cuttings and grafted seedlings. In large planting troughs, it also acts as a drainage layer to prevent waterlogging. Product Specifications Material: Basalt Color: Yellow-green 2.5cm Size: Total Width: 13cm Total Length: 27cm Single Cube Size: 2.5 × 2.5 × 2.5 cm 4cm Size: Total Width: 16cm Total Length: 28cm Single Cube Size: 4 × 4 × 4 cm Packaging List: 56pcs*Plant Rock Wool Please Note: (1) Please allow slight size errors due to manual measurement. (2) Colors may vary slightly depending on the monitor. Thank you for your understanding. (3) Precautions: Keep away from fire.