Plant-Vallisneria gigantea
Large plant with linear leaves the bright or the
dark green color, reaching length more than 1 meter. To contain
vallisneria gigantea huge follows in an aquarium of great volume. The
plant is rather unpretentious, but because of greater sizes seldom
contains aquarium-man. It grows in regular intervals within all year.
For vallisneria gigantea tropical and moderately warm aquariums
approach.The most suitable temperature of water 20-26 °Ñ. To reduce temperature up to 18 °Ñ and below it is not recommended. Vallisneria gigantea as well as other representatives of this sort, it is not so exacting to structure of water and its rigidity, but grows in soft sub acidic water is a little bit better. The general rigidity should be less than 8 °. Regular substitution of water is not obligatory, as vallisneria gigantea well grows both in old, and in fresh water
Illumination of an aquarium where this plant contains should be bright enough. It is necessary to consider, that long leaves vallisneria gigantea huge shade below the located plants, therefore except for strong top illumination it is necessary to make additional lateral illumination. Duration of light day should be about 12 hours.
The ground for vallisneria gigantea is necessary nutritious enough. In a new ground under roots it is expedient to add clay. In the further for a feed of a plant the silt which has collected in a ground quite suffices. Character of a substratum of value has no, it is possible to use a pebble of any size and sand. For maintenance of correct development of root system thickness of a layer of a ground should be not less than 7 centimeter.
Additional mineral top dressing in the general aquarium usually do not make.
It is necessary to consider, that vallisneria gigantea badly transfers presence at water of many mineral substances. So, surplus of ions of sodium essentially breaks its growth. In this connection to add in water soda and salt it is necessary with the big care.
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