Questions about Neolamprologus Brichardi

I am a big fan of these beautiful Africans. They are a cave breeder from Lake Tang. My breeding pair live happily in a 15G and produce fry every few weeks like clockwork. Unfortunately they are not very tolerant of other fellow Africans especially those that occupy the lower level. Two breeding pairs can command a 4ft tank due to their territorial behaviour. I use an Eheim HOB rated higher than for the size of the tank. Most Lake Tangs dislike large water changes, so I do a small water change sparingly. I also use a substrate mixed from half fine gravel and half crushed shell. This helps keep the pH stable and alkaline. They need plenty of cave work to simulate the Lake tang rocky shore line. Other than that they are easy to keep and love blood worms. Up to 3 generations can live together, but I start to remove the fry once they reach 1cm. This is because the parents may start to eat new fry to prevent overcrowding. Hope you decide to keep them!