Since you are growing in soil, a great tip is to leave the old roots and rootball. Its loaded with the exact things your plant will need. When recycling the re amended soil, I bury the old roots down in the middle where I anticipate the new roots making contact with the old ones. The old roots should have dormant mycorrhaziel fungi (if you used it previously) as well as the right bacteria and fungi.That soil is readily available and based on some research and some podcasts, I decided to go this route. There is also Sohum, and locally http://digitsoil.com/ I sent an email to digit and got no response, and didn't feel like hoofing over to a nursery to check it out.
I always assumed it would not be water-only, because of what I've read and my inability to just leave things alone...
The detroit soil is super, super light. Takes a while to hydrate. So far so good, I just wanted a base living soil to get started. My plan for the buckets is remove root ball, re-amend, re-cook, and re-use. Probably for the Jr's too.
I prefer the buckets, just for the form factor I have a 6.5' tall tent. If they get too tall I'll train or worst case scenario... supercrop. Removing that tissue paper cover on the Jr's is starting to get old when I can just plunk down my top dress on the buckets.
Now as soon as I get some of those new Meph Sativas in my mailbox -- I'll be dropping a couple more.
In my no till pots, I just chop the plant, and put a seed an inch away from the old stem/root. Built in slow release fertilizer, while being able to re-use some of the pathways already established between the soil/plant/ and microbes. Less work too.
cheers
os