HOTBEST 50Pcs Rock Wool Cubes,Rockwool Grow,Hydroponics Grow Cubes Multifunction Greenhouse Compress Base for Cloning Plant Propagation and Seed Starting

【Premium Material】The rockwool (rock wool) is made of molten stone, spun into marshmallow fibers, and then it is pressed into cubes, blocks or panels. Other rock wool producers cut various sizes of wool from a batch of wool. 【Size】Single 3x3x4cm. Improved homogeneity,Optimum robustness and flexibility,Ideal air/water balance,Consistent shape of the seed hole,Identically shaped plugs.Root development through the entire plug. 【Promote Plant Growth】The rockwool cube sheet has a huge ability to absorb nutrient solutions, while retaining a lot of oxygen to promote the rapid growth of plants. 【Graduated Sizes】Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the cubes can also be transplanted into more traditional and growing mediums.Growing Medium Starter Sheets Rockwool Starter Cubes for Seedling Propagation,Cloning. 【Air/Water Balance】The renewed plugs result in a maximum number of useable and homogeneous seedlings. Both form and strength have been greatly improved for good machine and manual processing. Whether sowing or transplanting, the new plug is the solution to achieving a homogeneous sowing result.