Description: Made of rockwool compressed into a round cube. Small bulk density, light texture, and high porosity. Good air permeability, strong water absorption, and good drainage. Suitable for planting and colonizing all types of plants. An excellent choice for soilless cultivation.Specifications:Material: RockwoolColor: GreenSize: 2.7 x 2cmPackage quantity: 50 packsProduct use method: First soak the rockwool block in nutrient solution and then sow the disinfected soaked seeds with white seeds. When the seedlings grow to 15-25cm, they can be transplanted into the soil together with the rockwool. This method can avoid diseases and insect pests during the seedling stage, shorten the seedling age by 3-5 days, and increase production by more than 10%. In addition, it is low-cost, labor-saving, easy to transport, and convenient to manage. It can also be used for seedling production in field cultivation and factory production of vegetable soil cultivation. Do not water for 3-7 days before transplanting to dry the rock wool block and promote the freezing of seedlings. After the root system is fully grown, transplant them into the soil together with the rock wool. Water 2-3 days after transplanting. Compared with traditional cultivation, this method can make the seedlings free of diseases and insect pests, and there is no slow seedling period after transplanting, which can increase the yield by 10%. It is convenient for transportation and management. Only nutrient solution needs to be poured, and no measures such as inversion, drying, and squatting are required.Note:1. Due to different light effects, the actual color may be slightly different from the image2. Due to manual measurement, please allow a deviation of 1-3cm