Don't put the rooted clone into a rockwool cube if you can get away with it. Try a neoprene insert. All hydro stores sell them, they have a slit in the side and the clone slides in real nice and then fits into whatever size hole you have. They start at an inch I believe and go up to 6 inches. Much better method. Let us know what help you need as you get going. Mostly Crazy, Rose, myself, and many other bubbleheads and other growers alike here can help you. We have all made the same mistakes at least once. Especially when buying equipment and making stuff that works. Now, we all have at least 10 different methods and they are all successful. With everyones knowledge, you can't grow wrong here!!! Plus we still learn daily, it's a hobby that never stops changing or growing!!