Not to be the guy that always does this, but your tank is overstocked and under filtered. On my 55g I have an eheim professional 3 and a marineland p.o.s but it still does something like 300g/ hour through biomedia and one tray of mechanical. Also a power head doing 750gph. And then the overstocked, your tank is probably 4x18x or something, not a large enough footprint for any upper jaw or ornate.