Microsorum pteropus "Windelov": Lace Java Fern
A unique cultivar of Java Fern named after its branched, lace-like leaf tips, ideal for attaching to wood or stones.

Microsorum pteropus "Windelov"
Microsorum pteropus "Windelov", commonly known as Lace Java Fern, is a highly sought-after aquatic plant known for its unique, finely textured leaves that gracefully add an organic touch to any aquascape. Native to the tropical rivers and streams of Southeast Asia, this fern displays stunning ruffled foliage that creates a soft, naturalistic feel when paired with rocky substrates and driftwood. The intricate leaf patterns not only contribute to the aesthetic appeal but also provide shelter for small fish and invertebrates, making it an essential addition to any aquarium design.
Care Guide
Caring for Lace Java Fern is relatively straightforward, making it an excellent choice for both novice and experienced aquarists. This hardy plant thrives in a variety of water conditions, but following specific maintenance practices will ensure its optimal growth:
- Water Temperature: Keep the water temperature between 22-28°C (72-82°F).
- Water Parameters: Maintain a pH range of 6.0 to 7.5 and a hardness level of 2-15 dGH.
- Lighting: While Lace Java Fern can tolerate low light conditions, it thrives best under moderate lighting for about 8-10 hours a day. Avoid intense lighting, as this can lead to algae growth on its leaves.
- Substrate: This plant does not need to be planted in substrate; instead, it can be attached to rocks or driftwood using fishing line or thread, allowing its roots to anchor without burying them, which can cause rot.
Nutrient Requirements
For optimal growth, Lace Java Fern benefits from specific nutrient conditions:
- Light: Moderate light levels are ideal. Excessively bright light can lead to algae blooms on the leaves.
- CO2: While not strictly necessary, a supplemental CO2 system can enhance growth rates and improve overall health. If CO2 injection is available, aim for levels that keep the pH stable.
- Fertilization: Liquid fertilizers rich in micronutrients can be added weekly. Ensure fertilizers do not contain copper, as this can be harmful to invertebrates.
Natural Biomes
Microsorum pteropus "Windelov" flourishes in diverse aquatic biomes, including but not limited to the following:
These biomes provide the ideal habitat for Lace Java Fern, characterized by slow-moving waters and shaded areas from overhanging vegetation.
Livestock Compatibility
Lace Java Fern is compatible with a wide variety of aquarium inhabitants. Ideal companions include:
- Small Freshwater Fish: Neon Tetras, Guppies, and Corydoras Catfish
- Shrimp Species: Cherry Shrimp and Amano Shrimp thrive in environments with Java Fern, as they benefit from the shelter it provides.
In conclusion, the Lace Java Fern is not just a beautiful addition to any aquascape; it's also a low-maintenance plant that contributes to the overall health and aesthetics of the aquarium environment.