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Datasheet
| Aquarium Compatible | yes |
| Plant Outdoor | unknown |
| Plant Emersed Growth | yes |
| Plant Growth | fast |
| Temperature Tolerance | 10°C / 50.00°F - 30°C / 86.00°F |
| Temperature | 20°C / 68.00°F - 26°C / 78.80°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
Helanthium sp. "Longifolius," previously known as Echinodorus sp. "Longifolius," is a medium-sized aquatic plant belonging to the family Alismataceae. It is characterized by its narrow, grass-like leaves that grow in a rosette form. The plant is adept at reproducing rapidly through the formation of runners, resulting in a cluster of loose, light green leaf rosettes.
Aquarium Suitability
This plant is considered suitable for aquariums, particularly in midground and foreground areas, including nano tanks, when available. However, it is rarely commercially available and may be challenging to acquire from other hobbyists.
Demands and Hardiness
With an easy difficulty level, Helanthium sp. "Longifolius" thrives in freshwater aquariums with moderate to high lighting conditions. It prefers a temperature range of 20-26°C and pH levels between 5-7.5. Additionally, it requires adequate carbon dioxide levels (10-40mg/l) and nutrient content such as iron, nitrates, phosphates, and potassium for optimal growth.
Aquascaping & Usage
In aquascaping, Helanthium sp. "Longifolius" can be utilized to create a visually appealing midground or foreground layout, especially in group plantings. Its fast growth rate and rosette formation make it a suitable choice for enhancing the aesthetic appeal of nano tanks.
Propagation
The plant propagates primarily through the development of runners, which produce long internodes that aid in the rapid expansion of the plant within the aquarium setting.
Habitat and Distribution
Although the exact habitat of Helanthium sp. "Longifolius" is unknown, it is believed to originate from regions in South or Central America. Its growth characteristics and propensity for runner formation suggest an adaptation to freshwater environments in these geographical areas.