tank is great, but i do have suggestions. As your cichlids get bigger (granted, they are already pretty big) they don't need so much hiding space. Those rocks are really too big and aren't really going to serve a purpose with such big cichlids. Also, I would get either finer gravel or sand. Put in some nice driftwood as well. Finally, paint the back black. You tank will be absolutely STUNNING!
Oh, as for stocking consider bichirs and arowanas as complements for your oscars and flowerhorn!
Oh, as for stocking consider bichirs and arowanas as complements for your oscars and flowerhorn!