When your seedlings have a couple of small leaves and the roots emerge from the starter cubes, it's time to transplant them into full-sized rockwool blocks. Soak the blocks in pH 5.5 water and insert the cubes in the holes shortly afterwards. Use the 3'' or 4'' sizes if you plan to move up to rockwool slabs later on, or choose the larger 4'', 6" or 8'' sizes to grow plants to maturity.
NOTE: A full case of these cubes is 36 strips (216 blocks). If you are looking to purchase full cases, simply order in increments of 36. When you add them to your cart you will see that the price has been changed to reflect the discounted case price.
