Labidochromis are easy to breed. i'd suggest keeping a 10g tank for the fry if you're not using them as feeders. go heavy on the rocks with plenty of hiding spots/caves. generally acceptable ratio is 1 male to 3 or 4 females. there are many flavors of Labidochromis, but the one most often found is caeruleus (yellow lab). lime stone works well to keep the ph at a higher level, as well as some pieces you can find have small inlets where a female can hide from the aggressive male during mating. it's very cool to see, i highly recommend starting with that particular species. also, no need for plants in your setup.