Eleocharis montevidensis, also known as Giant Hairgrass or Montevideo Hairgrass, is a beautiful and versatile aquatic plant that can add a lush, natural look to your aquarium. This plant is native to South America and is widely popular among aquarists due to its graceful appearance and ease of care. Whether you have a freshwater aquarium or a paludarium setup, Eleocharis montevidensis can thrive and create a visually stunning aquatic landscape.

Appearance:

• Graceful Blades: Eleocharis montevidensis features long, thin, and gracefully arching blades that resemble the delicate strands of hair, giving it a unique and attractive appearance.
• Vibrant Green Color: The plant showcases a vibrant green coloration, adding a refreshing and natural touch to your aquarium.

Water Conditions:

• Temperature: Maintain the water temperature between 68°F and 82°F (20°C to 28°C) for the optimal growth of Eleocharis montevidensis.
• pH Level: Aim for a slightly acidic to neutral pH range of 6.0 to 7.5.
• Water Hardness: Provide a moderate water hardness level between 3 to 8 dGH for healthy growth.

Tank Setup:

• Tank Size: Eleocharis montevidensis is suitable for various tank sizes, making it ideal for small to large aquariums and paludariums.
• Substrate: Plant the hairgrass in a nutrient-rich substrate like aquarium soil or fine-grained sand to promote healthy root development.
• Plant Placement: Eleocharis montevidensis is a versatile plant that can be placed in the foreground of the aquarium or in areas with shallow water in a paludarium setup.

Care:

• Lighting: Provide a lighting duration of 10 to 12 hours per day with moderate to high-intensity lighting to support its growth. Use full-spectrum LED or fluorescent lights for optimal growth.
• Carbon Dioxide (CO2) Injection: CO2 supplementation can benefit the growth of Eleocharis montevidensis, especially in high-light setups. However, it can also thrive without CO2 injection in low-tech setups.
• Fertilization: Regularly dose the aquarium with a comprehensive liquid fertilizer to provide essential nutrients, including iron and micronutrients.

Compatibility:

• Tank Mates: Eleocharis montevidensis is compatible with a wide range of peaceful community fish and other aquatic plants. It provides a natural and safe hiding place for small fish and fry.
• Adequate Space: Provide enough space around the plant to allow for proper growth and to create a natural, meadow-like appearance.

Propagation:

• Runners: Eleocharis montevidensis propagates through runners, producing new plantlets along horizontal stems. Once the runners develop roots and grow, you can separate and replant them to expand the carpet.