Elodea Densa (Pondweed).
AKA Egeria Densa
Highly popular oxygenating pond plant.
You are buying 20 loose strands or stems and 20 weights.
Better value for money than your local fish shop!
Elodea densa (Now called Egeria densa) is an ideal plant for your pond. It will help with reducing nitrate in your tank and will improve water conditions for your fish.
These plants are stem plants which do not have roots. Stem plants are on average around 8 inches in length. This is the most common form of aquatic plant, and once planted in the aquarium will soon grow roots and new leaves assuming correct care and attention is provided.