Anacharis Egeria Elodea Densa Tropical Live Aquarium Aquatic Plant BUY2 +1 FREE by New You are buying 1 bunch (6 Stems 6-8 inches each of Anacharis Egeria Elodea Densa ). Egeria densa, is most commonly known as Brazilian waterweed. Egeria densa is easy to grow and a beautiful plant for a tropical aquarium. It grows very well in high light with a water column fertilizer and Substrate fertilizer like root tabs. It Grows Both with CO2 and without CO2. The Egeria densa is a good plant for beginners, and its rapid growth helps create a balance in the aquarium from the start. Stems grows fast to 40-100 cm and becomes 2-4 cm wide. Anacharis is an excellent nutrient controller and oxygen producer for all types of freshwater aquariums. Anacharis looks best when planted in groups along the back and sides of the aquarium.