Microsorum pteropus (commonly known as Java Fern) is a highly resilient, low-maintenance aquatic fern native to Southeast Asia. It is one of the most popular choices for both beginner and advanced aquarists because it thrives in a wide range of water parameters without needing specialized care.

• Scientific Name: Microsorum pteropus
• Common Name: Java Fern
• Origin: Southeast Asia
• Family: Polypodiaceae
• Height: 15-30 cm
• Growth Rate: Slow to Moderate
• Placement in Tank: Midground, Background
• Light Requirement: Low to Medium
• CO2 Requirement: Not required
• Temperature: 20-28°C
• pH: 6.0-7.5
• Propagation: Rhizome division, adventitious plantlets

Key Features:

• Large, Wavy Green Leaves: Java Fern has elongated, vibrant green leaves with a slightly wavy texture, adding a natural and flowing aesthetic to the aquarium.
• Versatile Planting Options: The rhizomes can be easily attached to hardscape elements such as driftwood or rocks, giving aquarists flexibility in aquascape design.
• Slow to Moderate Growth Rate: Java Fern grows slowly to moderately, requiring little maintenance, which makes it ideal for those looking for a low-effort plant.
• Hardy and Easy to Care For: Java Fern is highly adaptable and can thrive in a variety of conditions, from low to medium light, making it suitable for all aquarists.

Care Requirements:

• Lighting: Java Fern requires low to medium lighting to thrive. It grows well even under low-light conditions, making it an excellent choice for low-tech aquariums. Too much light can lead to algae growth on its leaves.
• CO2: CO2 supplementation is not necessary for Java Fern. It can thrive in low-tech tanks without CO2, though adding CO2 can slightly enhance its growth rate.
• Water Parameters: Java Fern is highly adaptable to different water conditions and grows well in a pH range of 6.0 – 7.5, with temperatures between 20-28°C.
• Trimming: Due to its slow growth rate, Java Fern requires minimal trimming. Remove older or damaged leaves to maintain a healthy appearance.

Planting Tips:

• Attach to Hardscape: Java Fern should not be buried in the substrate, as this can cause the rhizome to rot. Instead, attach the plant to hardscape elements such as rocks or driftwood using thread or aquarium-safe glue until it anchors itself.
• Avoid Burying the Rhizome: Ensure the rhizome remains above the substrate to prevent rot. The roots can grow into the substrate, but the rhizome should always be kept uncovered.
• Propagation: Java Fern propagates through rhizome division or by producing adventitious plantlets on older leaves. To propagate, simply cut a section of the rhizome with leaves attached and reattach it to a new location.