Giant Vallisneria Rubra
Notes:
Giant Vallisneria are heavy root feeders and should be planted deeply in quality aquarium soil.
Giant Vallisneria grows very large and tall making them suitable for larger planted aquariums.
Do not make drastic changes to the aquarium. Unstable parameters can result in melt and rotting of the aquarium plant.
CO2 injection will yield better growth.
Please research appropriately to ensure your plant thrives.
Giant Val Rubra is a variant of giant vals with leaves that can develop a reddish hue.  They act as the perfect background plants, growing tall and fast to create a jungle like appearance.  Vals are grass like plants that spread along side shoots and can grow to the height of your aquarium.  They are nutrient loving plants that anchor deep into the substrate.
Family: Hydrocharitaceae
Region: Central/South America
Height: 12-20"
pH: 6-7.5
Care: Moderate
Light: Moderate to High
Co2: Recommended 
Propagation: Cut lateral shoots
Growth rate: Fast