Enemies of algae
In the fight against plant algal blooms, caused by active reproduction of algae, is the control of the concentration of nutrients: micronutrients, nitrogen - and phosphorus-containing molecules, and potassium. However,…

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Aquarium fish - catfish.
Under the collective name of soma mean -- more than 2,000 species of baleen variety of fishes from 31 families. Most of them inhabit freshwater reservoirs 5 continents (only 1%…

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Sea, river and lake fish
We all know that water is life. Without water can't live no living creature. And the first life originated in water. Fish one of the many live organisms living in…

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Dangerous animals – memo for leaders and parents
Rest in children's sanatorium "Krynitsa" safe for your children. The territory is guarded around the clock, equipped with video surveillance systems. However, a number of natural factors, in particular dangerous…

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Aquarium fish — fish that are bred in aquariums, usually, decorative purposes.
The majority of aquarium fish in natural conditions are inhabitants of tropical and subtropical freshwater reservoirs, for the life of them requires a relatively high temperature of water, approximately corresponding…

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