Description
Japanese Pennywort (Hydrocotyle tripartita “Japan”) is a fast-growing, low-maintenance aquarium plant that can be used as a carpet or foreground plant, or allowed to grow bushier. It thrives in a range of conditions, including without co2 injection, although CO2 and supplemental fertilization will promote faster, denser growth.
Here’s a more detailed guide to caring for Japanese Pennywort in an aquarium:
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Substrate:
Plant in fine-grained substrate, preferably one that is nutrient-rich, or you can allow it to float at the surface.
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Placement:
Can be used as a foreground plant, or allowed to grow upright for a more bushy appearance.
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Propagating:
You can propagate by trimming stems and replanting, or by splitting apart dense clumps and replanting the roots.
- Medium to High Light: It prefers medium to high light levels.
- Low Light: Can grow in lower light, but growth will be slower and it might not be as dense.
- pH: Thrives in slightly acidic to neutral water (pH 6.0-7.5).
- Temperature: Ideal temperature range is 68-82°F (20-28°C).
- Flow: Requires moderate water flow to prevent debris buildup and promote nutrient absorption.
- CO2: While it can grow without CO2, supplementation will promote faster, denser growth.
- Fertilizers: Regular all-round fertilization is crucial for healthy, lush growth.
- Trimming: Trim frequently, especially if used as a carpet, to maintain a low, dense growth pattern.
- Removing Runners: If you don’t want the plant to spread, cut any runners that appear.
- Clean and cycled tank: Ensure your tank is clean and cycled with suitable water parameters.
- Aquascaping: Can be used as a foreground plant or to create a dense, low-growing carpet.








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