I was doing this on the dinner table until I get a chance to make a stand for it and that container of rock is the mrs'. centerpiece with some lucky bamboo stalks, lol. I'm not sure about the smaller rocks though since I don't intend for much of the substrate to be showing once it is grown in. Oh and this "substrate" is just some extra unwashed multi-purpose sand I had laying around so I could play with the rocks. I'm probably going to run some potting soil capped by flourite black or maybe some amazonia if my starving college student budget can allow. I kind of wanna keep the majority of the tank open for my ember tetras that are going to be moving in, the tallest plant I wanna put in is the crypt behind the stump and it's only about 6-7" tall. In my 20L they hide a little more in the taller plants than I would like. I'm hoping they'll be out and a little more active with an open scape.
Here's a couple modifications I made:
Oh, I see now the bamboo, haha. My bad. I don't suppose she'd be thrilled if you stole the river rocks from the kitchen table...
Yeah, the amazonia is not too bad of a price from ADA ($30 a bag last I bought some a month ago)...until you add the $15 for shipping, haha. When I got a bag, I was sure to order some other things to spread out the shipping cost some.
I can tell that you like those rocks the way they are. I like them too, but I still think it looks like the two scapes aren't quite married to one another. I think you may need to pick either the stones or the large log as the center-piece to the hardscape and minimize the appearance of the other somewhat. It's almost like a battle of the elements in the tank, which just might work with plants and such, I'm not very gifted at this point in visualizing what a tank would look like with plants.
Maybe if the largest stone were a little less pronounced. Or perhaps if the rocks pointed all to the right like the largest one, give some flow in one direction instead of the more random arrangement. I agree that once it's grown in, the smaller rocks already in there will barely show, especially with s repens. So no need to add yet smaller ones if you don't plan on having substrate show.
Those are my thoughts at the moment, in the end, it's what you're happy with that matters (and I guess the mrs too, haha).