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Blue green algae

Green vegetation in an aquarium is an element necessary for maintaining the chemical composition of water and giving it a natural look. However, not all “greens” are the same.

A sample of “aquarium negative” are blue green algae microorganisms that have another name – cyanobacteria.

Blue-green algae are large bacteria that can be arranged one at a time, in groups or in the form of threads. Their peculiarity is the ability to carry out real photosynthesis (to release oxygen into the aquatic environment in the light). They, in contrast to euglenic and pyrophytic algae, do not have flagella and characteristic mucous membrane, quickly grow and cover with a dense layer the surface on which they are fixed.

In addition, this cell is a typical prokaryote. It does not have a nucleus and internal organelles.

In nature, it is part of the natural phytoplankton, a participant in many symbiosis in the water element.

Depending on the growing conditions they can change their color: from light green to dark purple. Such coloring is obtained due to the prevalence of one of the main participants of photosynthesis: chlorophyll and phycocyanin.

Hue depends on their percentage.

The dense population of aquarium water with such microorganisms leads to a loss of transparency, the acquisition of an unpleasant, musty smell, the death of cultivated plants and algae, as well as the fauna present.

Due to its structure, it quickly grows on solid surfaces, forming dense thick layers. Almost always around these organisms mucus is formed.

This is a protective property of cyanobacteria to resist adverse environmental factors. So, in nature, during the drying up of a reservoir, mucus does not allow bacteria to die quickly.

And when they fall back into the water, they quickly restore their viability.

Over the 3 billion years of its existence, blue-green algae have formed many modifications. ” Today, more than 2.5 thousand species are known. Among them:

For glaustrichia, natural habitats are bodies of water with saline water in which they can inhabit the outdated parts of the vegetation.

Anabena can be found in swamps and ponds with a clay bottom and even in puddles after rain.

Oscillators prefer standing water, often enveloping the surface of sunken objects, but they are also found on the surface of water bodies.

Numerous photos of “flowering” reservoirs reflect the result of colonization of cyanobacteria. Ecological balance in this case is disturbed.

Plants cease to grow and are poorly strengthened; fish are almost suffocated by the presence in the water of harmful chemicals – the pest’s life products.

All types of food is provided by the phototrophic method, similar to kelp. However, there is evidence that the bacterium can feed on mixotrophs, i.e. mixed up

It practically absorbs ready-made organic matter throughout the surface, thereby growing.

Sexually reproduced algae can not. They are characterized by filamentous growth method, known as vegetative.

Whole thickets quickly form from several initial elements, often entangling cultivated plants, like cobwebs.

Combines all types of cyanobacteria, high vitality and the ability to quickly recover.

Resistant pest and to some methods of disinfection. Salting popular with the people, adding a few drops of brilliant green to the water, or other similar effects, can resist.

To combat the need for natural antibiotics and special means for disinfecting water and surfaces of the aquarium.

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The blue-green algae belonging to the kingdom of pre-nuclear (or pellets), have gone so long a historical path of development that they have learned to adapt to the most negative conditions of existence. Many of them are unacceptable for other plants. They can grow in water:

  • contaminated with chemicals;
  • heated to 93 ° C;
  • with signs of rotting;
  • contaminated organic matter to indicators that exceed the permissible standards for life.

Bacteria are able to persist in ice and overgrow completely lifeless surfaces.

If blue-green algae appeared in the aquarium, Initially this can be noticed when changing water. Drain a few liters, you notice an unpleasant smell coming from the inside.

The leaves of large plants become slightly slippery and soft, gradually changing their color to more dull.

Later, attention is paid to strange mucus, which over time reduces the transparency and chemical composition of the aquatic environment. At the same time on the surfaces of stones, grottoes, various supports and decor items appears green plaque. He tends to turn into a dense crust of algae.

You can make sure of its presence, if you slightly scratch with your fingernail: it should be removed with large flakes.

The measures that were not taken in time are a guarantee of the complete destruction of the existing biocenosis. The raid will cover the walls, the bottom of the aquarium, settle on the surface of the ground and turn into a dense, air-tight coating.

A bacterium brought from outside to a prosperous water house requires for its development:

  • intense solar or artificial light;
  • temperature rises above 24 ° C;
  • rare change of water;
  • low level of aeration;
  • extended lighting period;
  • the presence of concomitant (bacterial) flora: various microbes, protozoa or viruses.

A factor contributing to sprawl is regular sediment from uneaten feed, especially of a biological nature.

How to treat this problem? After all, one often hears that water has sufficient cleansing ability to cope with its own pollution.

To a certain extent, this is true, but for large natural bodies of water. Artificial conditions, and, most importantly, a small amount of water, will not give an opportunity to win such an uninvited guest.

After all, he does not need food, he is an autotroph, and reproduction occurs quickly and easily.

You can try to defeat only the emerging blue-green alga, including the oscillator, with the help of orderlies of the bottom – antsistrusov. These beloved by many creatures belong to catfish, which are characterized by a natural way to clean the surface in a common water house.

They are not only fun, but also useful.

Blue green algae are bacteria., which should be addressed in several directions at once:

  • create conditions contrary to the algal world;
  • identify and implement a method of water disinfection;
  • Rinse the soil thoroughly and clean all affected surfaces.
  • disinfect the plants and wash them thoroughly in cold running water;
  • take measures so that the blue or greenish representative of unicellular algae does not reappear.

Gradually, the essence of these actions of an aquarist is as follows.

  1. Maximum deposited from the affected aquarium of its inhabitants;
  2. If possible, remove items that are relevant to the growth of cyanobacteria;
  3. Change at least half of the water volume, replacing it with fresh water enriched with oxygen;
  4. Well-rooted plants can not touch, and small and floating it is better to remove and reorganize them in an affordable way;
  5. Introduce an antibiotic into water, for example, erythromycin at a rate of 3-5 mg per 1 liter;
  6. Make a complete shading of the aquarium and leave it without light for 72 hours;
  7. At the expiration of the exposure once again change a third of the water and open it to the light.

Before reversing the fish, it is worthwhile to observe how effectively the rehabilitation took place. If there are traces of cyanobacteria, it is better to repeat the procedure in time.

Such actions can be parallel to fight not only with blue-green algae, but also by other harmful phenomena in the aquarium, for example, by a xenocus focus.

For small-sized aquariums, general recommendations cannot be considered optimal. Their main difference is that changing the part of the water, the amount of which is already limited, will not be enough.

For such a case, it is proposed to get rid of the plant pest using hydrogen peroxide. Determine its dose should be based on the volume of the aquarium: 20-25 ml of peroxide is added proportionally to 100 liters.

Most likely, the processing from the oscillator will not end one time, and after 24 hours it is advisable to repeat it.

Further tactics are determined by the intensity of development of cyanobacteria. If it is necessary, after several days, the treatment is carried out again.

Disinfecting with hydrogen peroxide is more difficult, since in this case the presence of fish and plants is completely excluded. For them, this chemical is life threatening.

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