Subwassertang, also known as Süsswassertang or Round Pellia, is a popular aquatic plant in aquariums, particularly for shrimp tanks. It is a low-light plant that thrives in a water hardness level of 0 to 8 GH, with temperatures between 65-78°F and a pH range of 6.5 to 7.5. Despite its low maintenance requirements, Subwassertang requires diligent water quality maintenance and can be sensitive to lighting intensity and hard water. It is known for its unique branching and ribbon-shaped thallus, which adds depth and beauty to aquariums. Subwassertang is a water column feeder, meaning it does not need substrate and feeds on available minerals in the water. It grows best at medium light and does not require CO2 or fertilizer to grow. Subwassertang is a great addition to any aquarium, providing natural food sources for shrimp and serving as a protective hiding place for fry and small fish.