Very nice, and you have some good looking tanks aleady. In my 135, I have 25 Bleedingheart tetras, 20+ red/blue columbian tetras, and a bunch of Lemons. The BHs and RBCs get large, but not too big. Just great looking schooling fish for a large tank. Check them out, when you look for congos.
125g semi planted. 2 silver angels, 14 silver tips, 16 white fin ornatus tetras, pair of Nicaraguense, pair of nototus severums, trio of firemouth cichlids. 2 FX5s, 1 1500gph circ pump, 2 48" LED lighs, and a HUGE piece of driftwood.
650g fish room. 15 30g tanks, 150g sump.