Assuming that novice aquarists often have trouble with choosing the right filter for the aquarium, we present the most popular filter for small and large aquariums.
Internal filters are the most simple. They should be placed inside the aquarium and fixed to the glass suction cups or special hooks. Water is absorbed in the lower part of the filter passes through the filter element, which is used as a foam or synthetic cotton wool, and then released at the top of the filter. Emerging jet is directed at the surface of water in the tank and thereby effectively enriches the water with oxygen. This type of filter is recommended for all aquariums. The extent of their advancement this filter may, in addition to mechanical filtration of water, and contain a biological filter.
Currently gaining popularity cascading filters. The filter is attached to the outside of the aquarium. Here the container with filter cartridge is located outside the vessel. In the middle of the water is pumped from the aquarium through the intake manifold to the filter. Continue reading
A cruise in the Mediterranean sea is very popular with tourists. This is an opportunity to visit several countries in one vacation. Here are some interesting facts about the Mediterranean sea:
The very name of this inland sea comes from the Latin Mare Mediterranea — sea in the midst of the Earth. This term was coined by the ancient Greek writer Julius Solin.
Modern computer technology has helped scientists to calculate that the filling of the Mediterranean sea occurred due to the catastrophic floods that occurred 5.3 million years ago. It is noteworthy that it was filled for two years. The article describing this research, published in the journal Nature, New Scientist gave a brief retelling.
Tectonic activity of this region caused the formation of a wall in place of Gibraltar. She was blocking the ocean from the sea that turned into a lake. Previously thought that the isthmus had a very powerful waterfall, which was considerably higher than Niagara, he filled the sea for about 10 years. Continue reading
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