DIFFICULTY Easy

A forgiving choice for newer planted tanks.

LIGHT Low

Around 8 hours is a useful starting point.

CO₂ Optional

Injection is not normally necessary.

GROWTH Medium

Medium trimming needs.

PLANT OVERVIEW

About Java Moss

A versatile moss that provides excellent cover for fry and shrimp.

Java Moss is the most common aquarium moss. It easily attaches to rocks and driftwood and requires very little light or maintenance.
Shrimp friendly Nano suitable Low-tech suitable High-tech suitable Fry cover
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 placementForeground
Typical height1–4 in
Typical width4 in
Suggested minimum tank2 gal
Suggested tank height6 in+
LIGHT + CO₂

Energy demand

Ideal lightLow
Photoperiod range6–10 hr
Approx. PAR10–60
Injected CO₂Optional
CO₂ benefitLow
NUTRITION

Where it feeds

Root feedingVery Low
Water-column feedingHigh
Overall fertilizer demandLow
Iron demandVery Low
MicronutrientsVery Low
WATER

Useful parameter range

Temperature60–82°F
pH5.5–8
GH2–15 dGH
KH1–12 dKH
PLANTING

How to plant it.

Substrate: Attach to hardscape
Hardscape: Can be attached to rock or wood.

Tie or glue to hardscape.

GROWTH + PROPAGATION

What to expect after planting.

Propagation

Division

Acclimation

Very easy.

COMMON PROBLEMS

What usually goes wrong.

Can attract hair algae.