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Java Fern
Microsorum pteropus
Attach to rock or driftwood; avoid burying the rhizome.
LightLow
CO₂Not required
DifficultyEasy
SubmersionSubmerged or emersed
Tank placementMidground · attach to rock or wood
Position and planting
Keep the plant underwater on suitable rock or wood. Secure it gently and do not bury a rhizome when present.
Attach to rock or wood and keep the rhizome above the substrate.
Attach to rock or driftwood; avoid burying the rhizome.
Lighting, CO₂ and nutrition
Light: Low. CO₂: Not required. Difficulty: Easy.
Added CO₂ is not required in the current library guide, but stable light and sufficient nutrients remain important.
Keeping it healthy
Provide consistent light, suitable nutrition, and routine maintenance. Remove decaying leaves. Watch for algae or melting after transitions, and troubleshoot conditions before making sudden changes.