How do I transplant from my aerocloner into 4 in rockwool
Most folks go to hydroton from the cloner. However, the easiest way to do what you want to is to take a knife and cut your cube in half. When doing so just leave a 1/2 inch wide area uncut. Now the cube will open like a book. Gently place the newly rooted clone in the middle and close it up. For the first week or so you may want to put a rubber band loosley around it to hold it closed. After that the roots will spread out and do it on their own. The key word here is "gently". If you keep the cube damp everything will work perfect and the roots will be undamaged.
Hope this helps.