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Datasheet
| Aquarium Compatible | yes |
| Plant Outdoor | unknown |
| Plant Emersed Growth | no |
| Plant Growth | fast |
| Temperature Tolerance | 4°C / 39.20°F - 28°C / 82.40°F |
| Temperature | 18°C / 64.40°F - 26°C / 78.80°F |
| Carbonate Hardness | 2-14 kh |
| pH Value | 6-8 ph |
| Light | medium-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
Potamogeton gayi, a member of the Potamogeton genus in the Potamogetonaceae family, is a delicate narrow-leaved pondweed species native to the southern regions of South America, including Southern Brazil and Argentina. This aquatic plant thrives in both stagnant and flowing waterbodies, where it grows submerged. Its long, creeping rhizomes give rise to vertical stems that can reach up to a meter in length. The linear leaves, which grow in two alternate lines on the stems, are soft, translucent, and range in color from green to orange-brown, depending on light exposure. The leaves lack stalks and can grow to be 4-12 cm long and 2-5 mm wide.
Aquarium Suitability
Potamogeton gayi is suitable for aquariums, especially for aquarists looking for a fast-growing plant that can serve as background or midground vegetation. It is known for its robust growth but has become less common in cultivation and trade in recent times.
Demands and Hardiness
With an easy difficulty level, this plant requires medium to high lighting and a water temperature ranging from 18-26°C. Additionally, it thrives in a pH range of 6-8 and under moderate to high carbon dioxide levels (5-40mg/l). Potamogeton gayi can withstand somewhat colder temperatures but should be monitored carefully.
Aquascaping & Usage
In the aquarium, Potamogeton gayi can be used for aquascaping purposes, especially to create lush, green backgrounds or midground areas. Its thin, delicate leaves add an elegant touch to aquatic landscapes.
Propagation
Propagation of Potamogeton gayi can be achieved through runners and cuttings, making it a relatively straightforward plant to propagate and spread within the aquarium environment.
Habitat and Distribution
This species predominantly inhabits the waters of southern South America, outside the tropics, where it can be found growing submersed in various waterbodies. Potamogeton gayi's natural habitat includes both stagnant and flowing aquatic environments, showcasing its adaptability to different water conditions.