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Datasheet
| Aquarium Compatible | yes |
| Plant Outdoor | unknown |
| Plant Emersed Growth | yes |
| Plant Growth | fast |
| Plant Colors | red, reddish |
| Temperature Tolerance | 12°C / 53.60°F - 32°C / 89.60°F |
| Temperature | 22°C / 71.60°F - 28°C / 82.40°F |
| Carbonate Hardness | 0-14 kh |
| pH Value | 5-7.5 ph |
| Light | medium-high |
| Carbon Dioxide (CO2) | 10-40mg/lmg/l |
| Nitrate (NO3-) | 10-50mg/lmg/l |
| Phosphate (PO43-) | 0.1-3mg/lmg/l |
| Potassium (K+) | 5-30mg/lmg/l |
| Iron (Fe) | 0.01-0.5mg/lmg/l |
General Description
Ammannia gracilis, commonly known as African hygro, is a fast-growing stem plant belonging to the genus Ammannia in the Lythraceae family. Native to swampy areas in West Africa, this plant displays vibrant red and reddish hues, making it a popular choice among aquarists. It thrives under medium to high light conditions and benefits from adequate CO2 levels ranging from 25-30 mg/l. A. gracilis grows quickly to heights of 20-50cm and spreads horizontally, adding a splash of color to aquariums.
Aquarium Suitability
With a medium difficulty level, Ammannia gracilis is considered suitable for aquariums, especially those with a volume exceeding 76 liters. It is frequently available commercially due to its popularity in the hobbyist community. The plant requires specific water parameters, including a pH range of 5-7.5, nitrate levels between 10-50 mg/l, and phosphate levels of 0.1-3 mg/l. It is recommended for use in the midground or background of aquascapes to accentuate its cognac-colored foliage.
Demands and Hardiness
Ammannia gracilis thrives in soft, slightly acidic water; however, it can adapt to varying water parameters. It benefits from nutrient supplementation, particularly iron and micronutrients, to maintain its intense red coloration and healthy growth. The plant's growth responds positively to a balanced environment with low nitrates and high phosphate and micronutrient levels. Keeping nitrates low while ensuring an ample supply of phosphates and micronutrients enhances the plant's color vibrancy.
Aquascaping & Usage
Ammannia gracilis serves as an excellent accent plant in aquascapes, adding a pop of red color to the overall aesthetic. Its fast growth rate and vertical development make it suitable for background placement or as a midground focal point. In Dutch-style aquariums, A. gracilis contrasts beautifully against bright green plants like Heteranthera zosterifolia, creating visually appealing arrangements. This vibrant plant is an ideal choice for aquarists seeking to introduce rich color contrasts into their aquatic environments.
Propagation
Propagation of Ammannia gracilis can be achieved through cuttings and lateral shoots. By trimming the upper portion of the plant and replanting it, hobbyists can encourage robust growth and the development of new shoots. Additionally, lateral shoots can be cut and replanted to propagate new specimens. With proper care and maintenance, A. gracilis can quickly reproduce and fill out the designated area within an aquarium, enhancing its visual appeal.
Habitat and Distribution
Ammannia gracilis is predominantly found in Senegambia, where it thrives in swampy habitats. As a native plant to West Africa, A. gracilis is adapted to environments with ample moisture and nutrient availability. Its natural habitat influences its preferences for soft, acidic water conditions and highlights its ability to adapt to varying parameters when cultivated in aquarium settings.