Eleocharis vivipara 'Long Hairgrass'

Eleocharis vivipara – Long Hairgrass

Eleocharis vivipara, commonly known as Long Hairgrass, is a fast-growing, tall carpeting plant with thin, grass-like leaves that add height and movement to the foreground or midground of aquariums. Native to North and Central America, it is popular for creating dynamic, naturalistic aquascapes, providing shelter for small fish and invertebrates while adding vertical texture to planted tanks.

Lighting

• Moderate to High Lighting: Strong light encourages upright, dense growth. Under low light, leaves may grow longer and lean, reducing carpet density.

Water Parameters

• Temperature: 20–28 °C; stable mid-range temperatures are ideal.

• pH: 6.0–7.5, slightly acidic to neutral water supports healthy growth.

• Water Hardness: Soft to moderately hard water (2–12 dGH) is preferred.

Substrate

• Nutrient-Rich Substrate: Thrives in aquasoil or enriched substrates; root tabs help when planted in inert gravel or sand.

• Depth: 5–7.5 cm (2–3 inches) substrate depth allows proper rooting and stability.

CO₂ and Fertilization

• CO₂: Beneficial for faster, denser growth but not strictly required.

• Fertilization: Regular dosing of liquid fertilizers containing nitrogen, potassium, and micronutrients supports healthy leaf development.

Growth and Maintenance

• Growth Rate: Moderate to fast; spreads via runners and produces plantlets at the tips.

• Pruning: Trim occasionally to maintain height, prevent overcrowding, and encourage horizontal spreading for a fuller appearance.

Placement in Aquarium

• Foreground / Midground: Ideal for adding vertical texture to carpets or creating a soft, grass-like midground layer.

Propagation

• Plantlets & Runners: Propagates naturally via runners and plantlets. Separate and replant healthy shoots to expand coverage.

Water Flow and Circulation

• Moderate Flow: Encourages upright growth and prevents debris accumulation on leaves.

Algae Control

• Prevention: Balanced lighting, nutrients, and CO₂ help reduce algae growth on leaves. Avoid excessive light without nutrient support.

Compatibility

• Community Tank Friendly: Safe with most peaceful fish and invertebrates. Avoid large digging or grazing species that may uproot plants.

With proper care, Eleocharis vivipara will form a lush, flowing foreground or midground display, adding vertical movement and natural beauty to your aquascape.

Interesting Fact: Long Hairgrass can grow taller than most carpeting Eleocharis species, providing a semi-tall “meadow” effect in your aquarium. Its fine, grass-like blades also create natural hiding spots for shrimp and small fish, enhancing both aesthetics and tank ecology.