Drilled limestone 22-32 cm

Limestone is used to decorate rock aquariums, especially in biotopes with Tanganyika and Malawi cichlids. You can create beautiful rock compositions which often resemble a reef and a marine aquarium, hence the great popularity of limestone. It is also used as a base for living rock in marine aquariums.
Moreover, it is an excellent hiding place and gives the fish shelter in shade.

It increases water hardness and the pH level.