Scientific name: Vallisneria rubra
Usual maximum size in aquariums: 40 - 60 cm (15.75 - 23.62 inch)
Recommended pH range for the species: 6.5 - 8
Recommended water hardness (dGH): 8 - 18°N (142.86 - 321.43ppm)
0°C 32°F30°C 86°F
Recommended temperature: 20 - 27 °C (68 - 80.6°F)
Reproduction of the plant: Runners
Origin (in the wild): South Asia
How fast these plants grow: Fast
Recommended substrate: Sand
Demands on lighting: Bright
Ideal placement in a fish tank: Background
Rubra Giant Red
These plants will send out runners under the substrate and plantlets will develop from these. After a while the daughter plants will develop their own root system, at this stage they can be separated from the mother plant to grow where they are or they can be transplanted to a different area of the aquarium. When planting these always leave the crown of the plant above the substrate, this is easy to spot as the crown will have a lighter colouration to the rest of the plant.
This is one of the better looking Vallisneria as it will display reddish leaves if given the correct lighting levels. If the lighting is too low, the leaves will revert back to a green colouration but the plant will still grow at a fast rate. If this is not pruned on a regular basis the leaves will start to spread across the water surface. Always make sure that the leaves do not get fractured, as soon as this happens the leaf will die off. Many keepers think that this plant cannot be pruned back, this is not true. As long as the leaves are cut back with sharp scissors they will be o.k. Leaves that are dying off can also be removed by lifting them away at the base.