Ceratopteris fern (Ceratopteris cornuta) or, as it is called, Fern horned – aquarium plant pterisovye family (Pter Growing area
Inhabits horned fern in the humid zones of Africa, oh. Madagascar, Yemen, Iraq, Saudi Arabia, Indonesia, northeast Indostan and northern Australia. More rarely, but nevertheless, it is found floating in reservoirs with stagnant or slowly flowing water.
Its second name plant received in connection with the similarity of the share of leaves with horns.
Ceratopteris fern can grow as floating in the water column, and planted in the ground. It grows up to 35-50 cm in length.
The shape of light green leaves fern changes throughout life: first the leaves are holistic, then they become notched and lobed, and in middle age they have a pinto-dissected form. Sheet plate grows up to 27 cm in length and up to 20 cm in width.
Along the edge of the sheet is bent down and has up to three rows of sporangia with 32 spores each. The plant has very fragile veins and cuttings.
Well-developed fibrous root system.
Fern horned is widespread among aquarists. He is unpretentious in content and growing fast. Suitable for both decor aquarium, as well as a spawning ground labyrinth fish, using it as a base for the nest.
Water parameters favorable for the contents of this aquarium plant, these are: temperature limits 20-28 ° С, pH from 5.4 to 8.0, hardness 4-18 °. He feels satisfactory in old water containing a large amount of humic acids, therefore it does not need constant water changes. Ceratopteris fern needs a strong but diffused illuminated.
In natural light, the plant must be protected from direct sunlight. To create artificial lighting, you can use fluorescent lamps (type LB), the power of which is selected at the rate of 0.5 watts per 1 liter of volume.
You can also use incandescent lamps, only their power should be approximately three times more than fluorescent ones. The duration of daylight hours for ferns should be at least 12 hours.
With properly created lighting, the fern grows rapidly and, by absorbing nutrients suspended in water, prevents the appearance of algae. For more comfort, it is necessary to create wet conditions. content: for this aquarium, in which grows fern, Cover with glass, leaving a small vent. Since the root system of the plant is very fragile and tender, the soil should be silted and fine-grained (for example, small pebbles or coarse sand).
To feed the plant is enough substances derived from water and soil, therefore, additionally feed horned fern not necessary.
Breeds Ceratopteris fern disputes. Before the formation of fertile leaves with sporangia.
Spores similar to brown powder in moist earth sprout well and produce new fast-growing shoots.