Description
Radican Sword – Echinodorus cordifolius
Introduction
The Radican Sword, Echinodorus cordifolius, is a popular aquatic plant known for its broad, heart-shaped leaves and its role as a stunning centerpiece in freshwater aquariums. Native to the Americas, this species can grow up to 20 inches (50 cm) tall, making it ideal for larger tanks. Its hardiness and aesthetic appeal make it a favorite among aquarists.
1. Natural Habitat and Behavior
Radican Swords are native to marshy areas and shallow waters in Central and South America. They thrive in nutrient-rich substrates and can grow partially submerged or fully aquatic. In aquariums, they are slow-growing and produce vibrant green leaves that reach toward the water’s surface.
2. Aquarium Setup
- Tank Size: Minimum of 20 gallons (76 liters) due to its size.
- Substrate: Nutrient-rich soil or fine gravel with root tabs.
- Decor: Place as a focal plant in the midground or background.
- Water Conditions:
- Temperature: 72–82°F (22–28°C)
- pH: 6.5–7.5
- Hardness: Soft to moderate
- Lighting: Moderate to high; 8–10 hours daily to encourage growth.
3. Diet and Feeding
Radican Swords rely on nutrient absorption through their roots. Supplement with iron-rich fertilizers and CO₂ injection for optimal growth. Liquid fertilizers can also be used to address deficiencies in the water column.
4. Compatibility with Other Fish
Radican Swords are compatible with a wide range of freshwater fish, including:
- Community species like tetras, rasboras, and guppies.
- Larger peaceful fish like discus and angelfish.
Avoid housing with herbivorous fish, such as certain cichlids or goldfish, that may damage its leaves.
5. Common Challenges and Tips
- Yellowing Leaves: Often caused by nutrient deficiencies; use root tabs and liquid fertilizers.
- Melting Leaves: Newly introduced plants may “melt” as they adapt to tank conditions. Remove decaying leaves to prevent water quality issues.
- Algae Growth: Ensure proper balance of lighting and nutrients to prevent algae from overshadowing the plant.
Conclusion
The Radican Sword is a versatile and visually striking plant that enhances any freshwater aquarium. Its robust nature and ease of care make it an excellent choice for both novice and experienced aquarists. Regular maintenance and nutrient supplementation will ensure this aquatic beauty thrives in your tank.
