Selecting Rocks for Your African Cichlid Aquarium

Nov 06, 2025 0

Cichlid tanks are some of the most fascinating in the freshwater aquarium hobby. The cichlids are known for their brilliant coloration and intriguing behaviors among the freshwater fish species. However, they do have certain environmental requirements, most notably, those concerning habitation and territory. In their natural environments, including Lakes and rivers, Cichlids use rocks and caves as hiding places. This article will guide you through selecting the best rocks for your African cichlid aquarium, ensuring a beautiful and healthy environment for your fish.

Why Rocks are Important for Cichlids

Cichlid fish are particularly happy when they are given some space in which they can find freedom. Many of them are found living in cliffs or in caves that provide them with protection and also give them a chance to roam.

Hiding Spaces: All fishes, particularly cichlids, should be provided with places where they can seek refuge when stressed.
Breeding Grounds: It is noteworthy that many cichlid species are cave lovers.

Types of Rocks for African Cichlid Aquariums

When choosing rocks for your aquarium, consider both aesthetics and water chemistry. The majority of rocks are chemically inert, meaning their composition won’t react with the water they’re in. However, some rocks can affect the pH and hardness of your water.

Popular Rock Types:

Limestone: Limestone dissolves in water. Texas Holey Rock, commonly referred to as Honeycomb Limestone, is another popular option for an African Cichlid tank. Of course it deposits calcium in the tank. So does crushed coral. Limestone will only raise the ph of you water to 7.5 and it will remain at 7.5. Limestone is a buffer. This rock is better for ca cichlids It is basically what is on the bottom of the rivers and lakes there. Holey rock, for example, is made of limestone and thus can be ideal for livestock that thrive in harder water (e.g., rift lake cichlids), as they buffer pH and provide hardness that your source water might lack.
Slate: For africans i use slate, or river stones. Slate is a heavy, fine-grained stone that can be cut into regular shapes and laid in courses. This can be used to create beautiful cichlid caves that will make your fish happy and healthy. The design of cichlid caves guarantees their stability and security.
River Rocks: River rocks are readily available at almost all landscaping companies, are abundant, and usually low cost. Colorado river rocks are pH-neutral and come in unique shades of grays and light blues.
Sandstone and Granite: Try to get sandstone or even granite. These types of rock are not buffers.
Seiryu Stone : Known as one of the most popular types of stones, made famous by Takashi Amano, Seiryu stone aquascapes look excellent with African cichlids.
Lava Rock: The only problem with lava rock is you have to make sure all sharp edges are dulled. Even doing that or using say lace rock your peacocks/haps will still manage to scrap themselves up fairly well... Personally if I were to buy rocks again I would go with tall pillars of say some type of granite for the haps/peacocks, and keep the lace rock with the mbunas.

In real life the rocks are so big for the peacocks/haps that in our tank we can only model it as say a single shelf or rock. The lakes in africa are mostly volcanic in nature.

Aquascape Tutorial - Setting up an African Cichlid Aquarium | Full set up video

Sourcing Rocks for Your Aquarium

Need rocks for your aquarium? You have decided to set up a cichlid tank, maybe your first one or maybe not. You know you want to include some rocks, but you don’t know what kind(s) to use and/or where to get them?

Landscaping Companies: One of the best places I have found to source them is landscaping companies. These companies often have multiple types, sizes, and shapes, even rocks of different color (though the colors probably aren’t separated). In fact, because landscaping companies buy in such bulk, they may just give them to you if you only need a few (~5-10).
Big Box Stores: The big box stores, like Lowes, Home Depot, and Menards, also carry a variety of rocks in their outdoor landscaping supply areas. River pebbles.
Local Environment: Another option is to source the rocks yourself from your property or someone else’s, or even a local river, lake, or stream. Be careful with the latter, however. Some bodies of water are state and/or federally protected, which also extends to the rocks in them. This usually applies to state and national park land. Not to mention you should get any property owner’s permission before venturing on their property rock hunting.
Local Fish Store (LFS): An in-between option to big box stores and doing your own rock hunting is visiting your LFS. Many will carry rocks that are specifically for aquarium use, meaning you do not need to know what type of rock it is and whether it is safe for your aquarium water. Also worth noting is that your LFS may be the only place you can find holey rock (other than via online vendors). The photo at the very top shows three pieces of holey rock, distinguishable by its white color, rough shapes, and containing holes.
Online Vendors: Still yet another option is to purchase rocks online. This is an easy way to find the exact kinds of rocks you might be looking for.

Creating Caves and Aquascaping

After you have selected the right rocks, the next thing is to construct the caves. Although you are placing rocks for the caves in the aquarium, draw a simple plan of how the caves should be to guide you. The construction of caves is one of the most important stages that should be carried out in creating a natural environment for cichlids.

Steps for Building Caves:

Before putting the rocks in the tank, they should be washed very well.
The first step is to start laying a solid base, which should consist of rocks.
When moving the rocks, lay them in such a way that they form tunnels, especially if the cave is made from slate or shale.
Politely shake the rocks to ensure they do not topple over or fall.

Maintenance and Safety

The design of cichlid caves guarantees their stability and security. Finally, it’s worth noting that you should be careful with the shape of the rocks you use. Cichlids can be quite rowdy.

Regular Maintenance:

It should be monitored regularly to ensure that bridges, floating structures, and other materials are not accumulating in the caves.
Caves also lead to water pollution, since wastes or leftover food can create a mess and impact water quality.
Once a week, ensure that the rocks are still in their correct positions and that they won’t fall off easily. If ever there are rocks that have been displaced, make sure to replace them in their proper places to mitigate the risks of accidents.
Occasionally, take samples of water and analyze them so that the pH does not change the chemical composition of rock materials.

Plants for African Cichlid Aquariums

While there are some aquatic plant limitations you should be aware of before designing your aquascape, with proper planning you can create a beautiful aquarium that your inhabitants will enjoy. If you’re considering housing cichlids, you may have learned that their care requirements differ between species. These fish come from different parts of the world, where their environments differ. These fish are known to pick at and move around sand, which can lead to plants being uprooted.

You’ll want to add plants that anchor above the substrate when keeping African cichlids. Generally, plants with thicker leaves tend to do better than plants with fragile leaves.

Recommended Plants:

Anubias: The Anubias genus is highly popular in the aquarium hobby due to its durability and ease of care. This plant has roots that remain exposed in the water column and it is commonly attached to hardscape using a fishing line or an adhesive. This plant is an attractive anubias species that differs slightly in appearance from anubias barteri.
Java Fern: Java Fern is often recommended to beginners new to the planted tank hobby for its ease of care and durability.
Bucephalandra: One of the most beautiful foreground and midground plants in the planted tank hobby is the bucephalandra plant. While it tends to be a bit more expensive and less common compared to some of the other plants we’ve mentioned, it rewards hobbyists with its stunning appearance.

Other Considerations

Some cichlids, such as mbuna and Lamprologines, are mostly native rock and/or shell dwellers in their natural habitats (e.g., Lake Malawi and Lake Tanganyika, respectively). Other cichlids may require a flat rock to lay eggs.

Read also: The Story Behind Cachapas

Aquascaping Styles:

Iwagumi-scapes: Iwagumi-scapes reflect a minimalist design. This can be accomplished in a dwarf cichlid tank, but you’ll need to carefully monitor PH. The large volume of plants looks fantastic with smaller species, and with proper trimming, a unique sense of scale can be achieved. Dwarf cichlids do well in these tanks, as the large volume of plants creates plenty of hiding spots.
Hygrophila Salicifolia: Hygrophila Salicifolia, often simply referred to as Hygro, is a unique-looking plant that will give your dwarf cichlid tank a wild look.

As you can see, African, new world, and dwarf cichlids all have subtle restrictions that you’ll need to be aware of when planning an aquascape. Now that we’ve summarized a few different tank ideas, what type of aquascape do you plan on creating?

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