DIFFICULTY Advanced

Benefits from more deliberate care.

LIGHT Very High

Around 10 hours is a useful starting point.

CO₂ Required

Injected CO₂ is important for expected growth.

GROWTH Medium

Weekly trimming needs.

PLANT OVERVIEW

About Eriocaulon 'Vietnam'

A larger starburst pipewort prized in aquascaping.

Vietnam' is a popular larger Eriocaulon forming a bold green starburst of grassy leaves. Like other pipeworts it needs soft acidic water, CO2, high light and a rich substrate, rewarding a well-tuned tank with a striking sculptural rosette.
Shrimp friendly Nano 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 height2–5 in
Typical width4 in
Suggested minimum tank10 gal
Suggested tank height12 in+
LIGHT + CO₂

Energy demand

Ideal lightVery High
Photoperiod range8–12 hr
Approx. PAR50–130
Injected CO₂Required
CO₂ benefitHigh
NUTRITION

Where it feeds

Root feedingHigh
Water-column feedingModerate
Overall fertilizer demandHigh
Iron demandHigh
MicronutrientsHigh
WATER

Useful parameter range

Temperature70–82°F
pH5–6.8
GH0–6 dGH
KH0–3 dKH
PLANTING

How to plant it.

Substrate: Nutrient-rich substrate; benefits from root tabs

Plant stems with spacing; replant healthy tops after trimming.

GROWTH + PROPAGATION

What to expect after planting.

Propagation

Stem cuttings

Acclimation

Wants soft, acidic, stable water; establish slowly.

COMMON PROBLEMS

What usually goes wrong.

Leggy with poor lower leaves in weak light or low CO2.