Besides fish, snails, plants and other living creatures in an aquarium inhabited by plankton, causing algal blooms - green filamentous and unicellular algae.In the context of a medium or low light, low water temperature, phytoplankton multiplies slowly, the water remains clear.Intensive increase in mass of microorganisms contribute to several factors.
The most basic reason for the enhanced growth of microscopic algae - a large amount of light.If the light is too intense aquarium water can turn green even in winter.In summer, "bloom" is enough natural daylight, especially if the tank is exposed to direct sunlight.
second important factor "flowering" of water - increasing its temperature.Active division of phytoplankton begins when the water temperature is higher than average.
presence in water of excessive amounts of organic substances - another factor contributing to the reproduction of microorganisms.If you spend a bad hygiene and regularly overfeed the aquarium fish, this medium begins to intensively share phytoplankton, in particular - Euglena green.
last factor affecting the purity of the aquarium - the lack of inflow of clean water.If you save the filter and aeration, chemical and suffering From Biological water balance, which leads to the transformation of the aquarium in the "swamp".
most radical way of getting rid of "blooming" - complete replacement of water, followed by shading the aquarium.If you completely change the water is problematic, it can be changed by a third and the aquarium cover from the light.Without light, phytoplankton stop multiplying and ciliates, for which it is food, purify water.In addition, you can populate the aquarium water fleas, shrimp, catfish, snails, which also feed on microscopic algae.
If the water turned green - reduce the amount of food for the inhabitants of the aquarium.Normally, the fish should eat every 5-15 minutes.In a day or two, you can even completely stop feeding - fishes and enough of the food that is already in the water.Watch out also for the correct operation of devices for the filtration and aeration of the aquarium - it helps to avoid excessive accumulation of organic matter in the water.