No, you don't need to remember a name you probably can't pronounce (I can't); use Umbrella Papyrus. This plant is excellent for large ponds and aquariums. It can grow up to five feet high under sunlight, and you can plant it directly in your substrate. However, the water depth must be less than sixteen inches. Umbrella Papyrus acts as the perfect purifier as it effortlessly adapts to higher degrees of pH.