Egeria Najas

Plant Profile

• Scientific Name: Egeria najas
• Common Name: Najas Elodea, Brazilian Waterweed (not to be confused with Egeria densa)
• Origin: South America (notably Brazil, Argentina, Paraguay)
• Height: 30–100+ cm (12–40+ inches), depending on tank size and conditions
• pH: 6.5–7.5
• Care: Easy – hardy and fast-growing; suitable for beginners
• Light: Moderate to High – stronger light promotes denser, bushier growth
• CO₂: Optional – grows well without CO₂, but growth improves with supplementation
• Propagation: Stem cuttings – simply cut and replant stem sections
• Growth Rate: Fast – can grow rapidly under favorable conditions

• Additional Notes:

  • More delicate and finely branched than Egeria densa, making it better suited for decorative aquascaping.
  • Excellent oxygenator and nutrient absorber, helping prevent algae.
  • Can be grown rooted in substrate or left floating.
  • May require regular trimming to prevent overgrowth.
  • Popular in coldwater and tropical aquariums alike.