Are you talking the coconut soil? I read a little about that, I might have to look into it further for next time...
If you have to transplant any of them upwards, just do it into coco. I did a log...

http://boards.cannabis.com/indoor-gr...onversion.html

I continued the experiment and flowered those plants--one stayed in soil, the other in coco. The coco yield was about double, even though they were switched over rather late. :weedpoke:

And it's not soil. It's just shredded up coconut husks, kinda like rope fibers(?)... hard to describe. But virtually inert. You are basically growing in hydro--you use hydro nutes...