- Package Contains: 140 rockwool cubes (1 inch) and 2 seedling starter trays for effective soilless cultivation. Ideal for hydroponics, seed starting, rooting, and plant propagation. - Benefits of Rockwool: These lightweight cubes feature up to 96% porosity and hold 91% water without absorbing nutrients, ensuring optimal conditions for plant growth. They provide excellent water retention and superior air permeability, which are essential for healthy root development. - High Survival Rate for Transplants: The sturdy 1-inch rockwool blocks maintain their shape, allowing seeds to establish robust root systems while retaining ample oxygen. This quality significantly increases transplant survival rates. - Easy to Use: Each rockwool plug has a precut for convenient separation. Simply wear gloves, cut the desired cubes, and soak them briefly in an acidic nutrient solution for about 10 seconds to adjust the pH to around 5.5. - Practical Applications: 1. Use these rockwool cubes to start seeds indoors as part of a hydroponic system, providing a controlled environment for growth. 2. Propagate plant cuttings by ensuring strong root establishment before transferring to larger containers or outdoor gardens. These rockwool cubes are an essential tool for both novice and experienced growers looking to enhance their gardening capabilities without the need for soil.