Grodan SBS – 100MMx100x75 (4″ Large Hole) Each

Description 4″ Large Hole-Hole Rockwool Cube Once your cuttings have rooted through their rooting-cube, it’s time to put them into a larger rockwool cube before transplanting them into your hydroponic system. These cubes have a small hole to take small 1/2-inch rooting-cubes. Rockwool – a traditional and trusted growing medium 3-Inch square cube – ideal for growing in before final transplantation Small hole will take any 1/2- Inch rooting-cube, such as our 1/2-inch rockwool cubes Economical and easy to us How the 4-Inch Large-Hole Rockwool Cube works: Rockwool holds lots of water and air for fast rooting and growth. Our 3-Inch Small-Hole Rockwool Cubes are perfect for growing your rooted cuttings in before transplanting into your horticulture system. The Rockwool is finely spun and of high quality and the hole in the top will take any small 1/2-inch rooting-cube such as our 1/2-inch rockwool cubes. Using the 4-Inch Large-Hole Rockwool Cube For best results, soak the large-hole rockwool cubes in weak nutrient solution which has been pH adjusted to about 5.5 and leave overnight. Before use, shake out excess nutrient solution. Rooted cuttings can then be placed directly into the pre-soaked 3-inch small-hole rockwool cube. The cuttings can then be grown into slightly larger plants until they are rooted through. When roots appear on the outside of the large-hole rockwo