Ray, I do not have any of the fir bark that I was using. I have to go to the orchiata or not repot and they really need to be i new medium. Should I do some in the medium and some in the large and see what happens? If you haven't seen the post, I have pictures of the Cat. that had no roots, the pictures are in my album as I haven't figured out how to add them to a thread. Many thanks to you for the KelpMax.