4 inch Large Hole Rockwool Cubes
Add to basket
These are used for transplanting. Once roots have emerged from the small cubes they are then usually placed in these larger cubes and then into any system. They are compatible with the large 36mm starter cubes.
Please note Rockwool should always be soaked for 24 hours in water with a pH of 5.5-5.8 to ensure the cubes are at the correct pH before planting out, you can also add a dose of Root Stimulator or similar to the water to ensure explosive growth!