The crushed coral and African rift lake gravel can give you an added benefit by increasing the pH of your water which this species prefers at 8.0 or higher. The creation of a cave dwelling for the fish will give them a sense of comfort and reduce the stress in their environment. To create this, a number of items can be used. Both rocks are easily used for making caves and homes for mbuna cichlids. Other types of rocks can be used, such as lava rock, as well as some clay pots depending on their size and shape.
Water quality is very important when keeping any fish as a pet.
Partial water changes should be done on a regular basis. Depending on the pH of your water source, you may have to add buffers to increase the pH and hardness of your water. For those who are interested, Animal Euphoria, an aquarium maintenance company, can professionally install and maintain your tank.