Welcome to the club!
I'm actually liking your 'big plateau!'
My thoughts about it woud be that it has a lot of potential for additional flora. In all of the crevices created with the stones, you can stuff/wedge some mosses, anubias (nana & nana petite), hygrophila pinnatifida, ferns( philippine java, boblbitis heudelottii mini, windelov, pretty much anything that would stay in scale of your scape).
Now at the base of both islands you can also tie on some of the plants mentioned above to smaller stones using green thread, fishing line or zip ties and methodically place around the base. Or go all out and do an entire row of Anubias nana petite and create a nice bushy hedge look at the base. Since all of these plants mentioned can attach to the stones with their roots, you can easily move them around till you find the right place for them.
You can also do the same with the driftwood and tie some of those plants onto it as well.
Now for the fish, I would increase the population of your harlequins. I personally like the purple harlequins. And definitely add more Ottos and maybe some Nerites, you'll need an algae control team. If you like schooling fish, I suggest a big school of pygmy cories (corydoras pygmaeus), they shoal pretty tightly. I'd keep the Rainbow in there as your centerpiece fish.
Thank you for sharing with us!
Damn, that's some good advice, thanks for taking the time out to help and give me your thoughts!
Pygmy Cories? How is it that I haven't seen them before! I love cories, but I don't like mixing too much... But when I googled these pygmies just now they seem really awesome, but different than other cories?! Like, they look more like a fish/tetra? They even swim a lot more it seems than regular cories? Am I right on this assumptions from the youtube vids I saw? I kinda want to trade my juliis in for these. They look awesome!
Great call on stuffing cracks/crevices. I totally should, and I guess that's now on my to do list! I had intentions to get a plant to fit in the crevice/glade in the smaller plateau (right side), you can't see it from the pics I took, but there's a perfect, long glade behind that front standing flat rock. I like that anubias plant for that I think. Maybe I can get more anubias in other cracks on other side.
Good recommendations on the tying stuff to stones, that sounds cool. I'll look that up more, maybe give it a shot too.
Seems like most want me to keep the rainbows... but I just don't know! When the Sajica get big I think it will be time to say adios to the rainbows, I just don't want that many BIG fish in the tank I think.
So you're one of the rare Harlequin over Rummy people, eh? haha I ran a poll on another thread between those two, most say to go with Rummy. I like the looks of Harlequin over Rummy, but I like the behavior of Rummy better.
Big decisions, haha
Stick with the rainbows, they are in my opinion the best freshwater fish. As far as the Otto, why do u even have it, u already have corys? In my tank, i only have 3 Denison barbs.
I got the otto because he's little and will work on algae? I don't like big algae eaters... he's pretty chill too, nothing phases him.
I was told in previous thread to get more denison barbs and 3 wasn't enough, but I think 3 look happy and good... further they get big, so I think I will hope that the 3 workout for me, too!