Red Pagoda Rock is an extremely attractive exotic aquarium stone that can be used in a variety of freshwater aquariums. It has a very distinctive layered composition with striking, bold shades of red and orange. Since it is often sandstone-based, it can significantly raise aquarium pH and hardness. This is of no concern with fish such as African cichlids. With consistent water changes and use of driftwood, it can also be very useful with aquarium animals that prefer softer water.