You have built a pond, planted it with plants and settled there living inhabitants. All summer did observe a small world, with interest to discover something new… autumn has Come. Now we need to think about how to save water world in winter. Well, if the weather isn’t frosty, but if not? All you need to provide.
Prepare ponds for winter starts in the fall, in October. First of all, you need to thoroughly clean the ponds from organic debris (tree leaves, remains of plants, fish excrement, etc.). In winter because of low temperatures reduce the activity of bacteria that decompose these residues. The result is the siltation of the bottom, reduces the oxygen content in the water and increases the content of nitrites and ammonia. Naturally, such changes can adversely affect the inhabitants of the lake, if not to destroy them. After cleaning of organic residues, it is necessary to trim the leaves and shoots to the very root. This applies primarily to plants – oxygenators. These include the water Crowfoot, hornwort, bolotnitsa, twrch, canadian Urrutia, lagarosiphon, tilea, rest and others. The leaves of these plants die off for the winter and if they advance not removed, they will rot and pollute the water. Not only cut the cane, through the hollow stems in winter will be given carbon dioxide to enter and oxygen to simulsays and plants.
Many aquatic plants “invented” a way to survive the winter cold. In autumn they formed buds that sink to the bottom and “sleep” there in the spring. If the pond is artificial, it is desirable to cut the plants these buds and transfer them to winter indoors. This stored the buds in the spring will sprout and turn into new plants. And do it faster than if left to overwinter in the pond. Continue reading
In ancient times, 65 million years ago (the end of the age of dinosaurs), on the border between the Cretaceous and Paleogene periods, lapped the ancient Tethys ocean . which, in geologically near future had to disappear and leave behind the Mediterranean . The black and Caspian seas and the Persian Gulf. The first two are further connected by the Atlantic ocean, the latest from the Indian.
Page sections about geologic processes in the Atlantic ocean and the seas of the Atlantic .
Sea Atlantic area
Archipelagos and underwater ridges of the Atlantic
The formation of the Strait of Gibraltar and the Mediterranean sea (5 million years BP)
The Strait of Gibraltar that separates Morocco from Spain, is only 15 km width. Perhaps the flooding of the plains by the ocean between Africa and Europe and is reflected in the ancient Greek myth of Debelyanovo the flood that supposedly happened in “ancient Greece”*, namely in the district of Dodon and of the river of Aheloy [I think it was near the Caucasus, and then we can talk about the Black sea]. There is another myth, that the rocks of Gibraltar and Ceuta opened Hercules.
The breakthrough of the Ocean through the Gibraltar – perhaps the work of man.
Kondratov A. Atlantis Tethys sea. Exposure.
Leonardo da Vinci on the levels and currents of the seas. Continue reading
It should be remembered that on the proper selection of fish depend for their future livelihoods and development. In aquariums, the pet shop exotic fish swim. Here and bright blue or crimson cocks, large Crescent angelfish, handsome shiny neons, minors, goldfish and their varieties: veiltail, telescopes and many other showy fish. The combination of various shapes, a range of colors — all this is striking in its beauty and impressive picture. And quite understandable is the desire to acquire the most vibrant and spectacular fish. Fish are living beings with their own habits, needs, tastes, temper, which you should know and consider. For example, goldfish. It is unpretentious, not afraid of temperature fluctuations and not choosy with food. But the mahseer of sumatranus, Vice versa, capricious, effeminate and therefore requires a relentless worries.
Or take game fish. She is very afraid of cold, significant reduction of water temperature may be detrimental. Of course, for all tastes will please. However, choosing fish for the aquarium, it is necessary to consider their features. It is recommended to adhere to the following mandatory conditions of settlement of the aquarium. If its volume is small (about 10 litres), more than three fish in it to contain impossible, as the norm is three liters of water per fish length of five or six cm But will grow more.
Than rupnieciba, the more living space it needs. Therefore, we recommend to buy (or produce) the aquarium at least 30-40 litres of water, which will contain 10-15 fish. To give the fish in the aquarium must also thoughtfully. Combine the fish can only be equal in size, behavior and environmental conditions. Cold-water fish cannot be placed together with warm-water, predatory peace and the Oversight etc. when moving may cause the death of fish. Continue reading