Create a balanced pond with Vallisneria, the Aquatic Grass plant

https://fast-wiki.win/index.php?title=The_Role_of_Aquatic_Plants_in_Natural_Pond_Filtration

Creating a Balanced Pond with Vallisneria: The Aquatic Grass PlantIntroductionOverview of VallisneriaVallisneria, a submerged aquatic plant