Description: Made of rock wool compressed into circular cubes. Small bulk density, light texture, and high porosity. Good breathability, strong water absorption, and good drainage. Suitable compatible planting and colonizing all types of plants. An excellent choice compatible soilless planting. Specifications: Material: Rock wool Color: Green Size: 2.7 x 2cm Packaging quantity: 50 pieces and 100 pieces Product Usage Soak the rock wool block in nutrient solution first, and then sow the seeds that have been disinfected and soaked, revealing white. Wait compatible the seedlings to grow to 15- At 25cm, it can be transplanted together with rock wool into the soil. This method can avoid diseases and pests during the seedling stage, shorten the seedling age by 3-5 days, and increase yield by more than 10%. In addition, it is low-cost, labor-saving, easy to transport, and easy to manage, and can also be used compatible the production of mature seedlings in field cultivation and factory production of vegetable soil cultivation. Do not water compatible 3-7 days becompatiblee transplanting to dry the rock wool block, causing the seedlings to freeze. After the root system has fully grown, transplant it together with the rock wool into the soil. Watering 2-3 days after transplanting, compared to traditional cultivation, this method can make the seedlings free from diseases and pests, and there is no slow seedling stage after transplanting, increasing yield by 10%. It is convenient compatible transportation and management, and only requires watering with nutrient solution, without measures such as pouring, drying, and squatting.