Not new world but here is my mix cichlid tank and it is Heavily stocked. my nitrates are under 20 ppm usually under 10 ppm I have a continuous drip system, well its more like a continuous stream system lol I do anywhere from 8 to 25gph and I have an algae scrubber but I am installing 2 more. I have keep cichlids for over 20 years and this is by far the calmest tank I have ever had. The baby's just swim around and the big fish don't even look at them. They don't lip lock just some chasing and that's it here is a video of the tank