Well 508, gotta say, this has been and epic read mate, good job. I got a couple of questions for you tho.
Sand - I had it in my tank and swore never again as when cleaning the fish poop off the top, if I disturbed the surface at All some horrible black sand from below showed through. How did you counter this or is this why you went for the darker sand ? Was it the cats and bottom feeders that churned up the sand for you or is there any trick to it ? I tried planting in mine so I didn't want to churn the sand too much for the risk of moving the roots.
Secondly, plants. Did you put any fertiliser under the sand or just pretty much stick your plants in ? (I no there is more too it than that by the way when it comes to planting) do you dose the tank with liquid fertiliser ?
Cheers for writing this journal, I've learnt a lot.