DIFFICULTY Easy–Moderate

A forgiving choice for newer planted tanks.

LIGHT High

Around 10 hours is a useful starting point.

CO₂ Recommended

Can grow without it, but responds noticeably to supplementation.

GROWTH Medium

Medium trimming needs.

PLANT OVERVIEW

About Hairgrass

A taller variety of hairgrass, great for midground or background.

Eleocharis acicularis grows taller than E. parvula. It looks like tall grass and sways beautifully in the water current.
Shrimp friendly Nano suitable Low-tech suitable High-tech suitable
CARE PROFILE

What this plant needs.

The useful numbers and practical notes, grouped around how you actually keep the plant.

TANK FIT

Placement + size

Primary placementMidground
Typical height4–8 in
Typical width3 in
Suggested minimum tank10 gal
Suggested tank height10 in+
LIGHT + CO₂

Energy demand

Ideal lightHigh
Photoperiod range8–12 hr
Approx. PAR30–100
Injected CO₂Recommended
CO₂ benefitHigh
NUTRITION

Where it feeds

Root feedingModerate
Water-column feedingModerate
Overall fertilizer demandHigh
Iron demandModerate
MicronutrientsLow
WATER

Useful parameter range

Temperature68–82°F
pH6–7.5
GH2–12 dGH
KH2–10 dKH
PLANTING

How to plant it.

Substrate: Fine substrate

Plant in small clumps.

GROWTH + PROPAGATION

What to expect after planting.

Propagation

Runners

Acclimation

Adapts well.

COMMON PROBLEMS

What usually goes wrong.

Hair algae can tangle in the leaves.