| Characteristics | Detail |
|---|---|
| Genus | Hygrophila |
| Species | Hygrophila corymbosa |
| Family | Acanthaceae |
| Origin | Southeast Asia |
| Common Name | Temple Plant |
| Light Requirement | Low–medium (±30–80 µmol m⁻² s⁻¹ / PAR) |
| Optimal Temperature | 22–28 °C |
| Growth Rate | Fast |
| Placement | Background |
| Plant Height | 20–50+ cm |
| Ideal pH | 6.0–7.5 |
| Water Hardness | GH 3–12 dGH; KH 1–6 dKH |
| CO₂ Requirement | Low–adaptive |
| Propagation Method | Stem cuttings |
Additional Information
Hygrophila corymbosa is a classic aquascape stem plant known for its high adaptability and fast growth. It features an upright stem with relatively large leaves, ranging from oval to lanceolate in shape, and a bright green coloration that creates strong visual contrast within the aquarium.
Under optimal conditions, the leaves grow broad with a smooth texture and are arranged oppositely along the stem. Internodes tend to elongate under low light conditions, while higher light promotes a more compact and dense growth form.
Native to Southeast Asia, this plant naturally inhabits shallow waters, riverbanks, and swampy areas with fluctuating environmental conditions. This ecological background contributes to its strong tolerance toward a wide range of water parameters.
In aquascape layouts, Hygrophila corymbosa is typically used as a background plant due to its size and vertical growth habit. When planted in groups, it creates a natural visual effect and enhances the sense of depth. The movement of its leaves in water flow also adds dynamic visual interest to the aquarium.
Requirements and Care
Growth Characteristics
This plant grows vertically with a sturdy stem structure. Its fast growth allows for the development of lateral shoots after trimming, resulting in a bushier appearance over time.
Its response to light is significant. Under low light intensity, stems tend to elongate with wider spacing between nodes. In contrast, higher light promotes more compact growth with denser leaf arrangement.
Light
The lighting requirement falls within the low to medium category, with a PAR range of approximately 30–80 µmol m⁻² s⁻¹.
Under low light conditions, the plant can maintain stable growth, although it tends to grow taller with a less compact structure. Leaf coloration remains green but may appear less vibrant.
Under medium lighting, the plant shows optimal performance, with broader leaves, brighter coloration, and a more compact structure. The risk of algae remains relatively low as long as nutrient balance is maintained.
CO₂ and Carbon
This plant does not depend on CO₂ injection and falls into the low to adaptive category. In low-tech systems without CO₂ supplementation, Hygrophila corymbosa can still grow well.
However, in high-tech systems with stable CO₂ supply, growth rate increases significantly. Leaves become larger and healthier, and the plant responds more quickly to trimming.
Nutrients
As a fast-growing plant, Hygrophila corymbosa has relatively high nutrient requirements, particularly for macronutrients such as nitrogen and potassium.
Nutrient deficiencies may lead to yellowing leaves or inhibited growth. Therefore, maintaining a stable nutrient supply in the water column is essential to sustain healthy plant development.
Water Parameters
This plant is tolerant of a wide range of water conditions, with an ideal pH between 6.0 and 7.5. Recommended water hardness ranges from GH 3–12 dGH and KH 1–6 dKH.
Stability of parameters is more important than achieving specific values. Extreme fluctuations may negatively affect growth and overall plant health.
Substrate
Hygrophila corymbosa can grow well in various types of substrate, including both inert and nutrient-rich substrates.
Its root system develops relatively quickly after planting. A stable substrate supports strong root anchorage and promotes optimal vertical growth.
Propagation
Propagation is carried out through stem cuttings. Trimmed stem sections can be directly replanted into the substrate.
Before replanting, lower leaves should be removed to prevent decay. New roots typically develop within a short period, allowing the plant to resume growth efficiently.
Conclusion
Hygrophila corymbosa is a highly adaptable aquascape plant with fast growth and relatively low maintenance requirements. It is suitable for a wide range of setups, from low-tech to high-tech systems.
As a background plant, it provides strong structural presence while contributing to ecological balance within the aquarium. With regular trimming and proper nutrient management, this plant can serve as a stable and visually effective element in aquascape layouts.
