More info
Datasheet
| Aquarium Compatible | yes |
| Plant Outdoor | unknown |
| Plant Emersed Growth | yes |
| Plant Growth | slow |
| Plant Colors | dark green |
| Temperature Tolerance | 18°C / 64.40°F - 26°C / 78.80°F |
| Temperature | 20°C / 68.00°F - 25°C / 77.00°F |
| Carbonate Hardness | 0-14 kh |
| pH Value | 6-8 ph |
| Light | low-high |
| Carbon Dioxide (CO2) | 5-40mg/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
The Dark Spleenwort, scientifically known as Hymenasplenium obscurum (Blume) Tagawa, belongs to the Aspleniaceae family and the genus Hymenasplenium. This aquatic fern originates from Taiwan and is commonly referred to as Crepidomanes auriculatum in misapplied names. It displays dark green foliage and grows slowly, primarily as an epiphyte on hardscapes.
Aquarium Suitability
Dark Spleenwort is considered easy to care for, making it suitable for aquariums. It is occasionally available commercially, thriving in temperatures between 20-25°C and tolerating a range of 18-26°C. It requires low to high light levels and prefers water conditions with a pH of 6-8 and moderate levels of carbon dioxide (5-40mg/l).
Demands and Hardiness
As depicted in the provided table, the Dark Spleenwort has specific water parameter requirements, including a carbonate hardness of 0-14, iron levels of 0.01-0.5mg/l, nitrate concentrations of 10-50mg/l, phosphate levels of 0.1-3mg/l, and potassium concentrations of 5-30mg/l. Its winter hardiness is unsuitable for outdoor use in colder climates.
Aquascaping & Usage
This fern species is ideal as an epiphyte, adding a unique visual appeal when grown on hardscapes within aquariums. Its slow growth rate and dark green coloration make it a popular choice for aquascaping enthusiasts looking to create natural and immersive underwater landscapes.
Propagation
Dark Spleenwort propagates through various methods, including proliferating leaves, rhizome division, splitting, and cutting off daughter plants. This ease of propagation allows for the effortless expansion of its presence within an aquarium setting.
Habitat and Distribution
In its natural habitat, Hymenasplenium obscurum can be found growing in Taiwan. As an epiphytic fern, it thrives in moist environments with access to adequate light and suitable attachment surfaces for its rhizomes or creeping stems.