DIFFICULTY Easy

A forgiving choice for newer planted tanks.

LIGHT Moderate

Around 9 hours is a useful starting point.

CO₂ Optional

Injection is not normally necessary.

GROWTH Fast

Weekly trimming needs.

PLANT OVERVIEW

About Hygrophila angustifolia

A large willow-leaf hygro for tall backgrounds.

Hygrophila angustifolia produces long, slim leaves and can reach the top of tall tanks quickly. Easy and vigorous, it suits big low-tech aquariums and is a strong nutrient sponge for algae control.
Shrimp friendly 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 placementBackground
Typical height10–24 in
Typical width6 in
Suggested minimum tank10 gal
Suggested tank height12 in+
LIGHT + CO₂

Energy demand

Ideal lightModerate
Photoperiod range8–11 hr
Approx. PAR20–55
Injected CO₂Optional
CO₂ benefitModerate
NUTRITION

Where it feeds

Root feedingLow
Water-column feedingHigh
Overall fertilizer demandModerate
Iron demandModerate
MicronutrientsModerate
WATER

Useful parameter range

Temperature72–82°F
pH6–7.8
GH3–15 dGH
KH2–12 dKH
PLANTING

How to plant it.

Substrate: Nutrient-rich substrate or root tabs

Fast grower; pinch and replant tops to keep it bushy.

GROWTH + PROPAGATION

What to expect after planting.

Propagation

Stem cuttings

Acclimation

Adapts quickly; may drop lower leaves if shaded.

COMMON PROBLEMS

What usually goes wrong.

Outgrows small tanks fast; shades plants below it if left untrimmed.