beez, while I don't have any advice concerning MMJ and back issues, I am 61 and do have some personal experience with back pain and arthritic knees. For me, I found that walking was a great way to help out both. I walk a minimum of 30 minutes a day and it seems to help quite a bit.
Thank you, Nismo. I have been strolling for a while so I have seen much good already. Finally set up my room last week and my plants went under the light Monday afternoon (after my son left for school).
And followed up Karn Evil 9 with Tarkus.