Akadama is a popular substrate used for keeping shrimp that require a lower pH, including caridina shrimp. These grains are double branded and very hard. Therefore, they fall do not apart in the aquarium, and last long.
Akadama is widely used in shrimp aquariums as pH lowering soil. This clay lowers the carbonate hardness and pH of the water making shrimps, fish and crayfish feel more at ease.
Although Akadama does not release ammonia, it is still recommended to cycle the aquarium for at least 4-6 weeks prior to introducing livestock. Several water changes during this process is also recommended to ensure a stable GH and TDS is present.