There are many books about mushrooms. They are all different. However, not all of them give detailed information, and not everywhere it is true. How to distinguish a good book from a bad one? Need to pay attention to some seemingly little things that may be crucial. * The book must be in addition to describing each type of mushroom basic concepts of edible, poisonous, places of growth, the general concepts and other things. * You should pay attention to the presence of Latin under the name of Russian name of the fungus. (Even if you do not need, it increases the likelihood that nothing will make a mess, and furthermore the fungus may have a different name, but almost always has one Latin name, which belongs to the species.) * Better, so that each species was illustrated with photographs rather than a picture that does not always give a correct idea of looks like a mushroom. From the photographs can sometimes be easier and faster to define and distinguish the fungus.

* The book should be of new books, as in Soviet books, there are some dangerous errors. This small book 'Encyclopedia of mushroom picker' is quite common, but does not meet the 2 nd and 3 rd paragraph, I've noticed in the book a bunch of errors and outdated data. Osteregaytis these books! Martina Knoop book 'All about mushrooms' (translated from German) of course is expensive. However, it meets the requirements, although it should be noted that the material is transferred from German, this should be considered, but in detail all the concepts, photos, and almost correct title. An example of a good book!

Window Aquarium

Great importance for fish is the amount of water in the aquarium. It is customary to give 2 liters of water for fish size 3 – 4 cm, however, practice shows that this rule can only be accepted for aquariums without artificial aeration, well-lit and planted with vegetation. With artificial water blowing air in the same volume You can put much more fish. Norma planting depends on the size of the aquarium (in the big aquarium in the same volume can contain a lot more fish), and the type of fish (same size fish of different species require different amounts of oxygen). The volume of the aquarium is also important to establish the biological "balance." Establish "balance" is much easier in a large vessel than in a small, so the beginner aquarist better osanovit choice aquarium of at least 30-40 liters.

Great importance for the successful maintenance of fish is the location of the aquarium. Many inexperienced hobbyists put an aquarium or on a windowsill or in front of the window. This is unfortunate option. First, the vast majority of fish look much worse in transmitted light than in reflected. Secondly, the window come the strongest fluctuations in temperature and, most importantly, light. Great the amount of light in the spring and summer, leading to algae overgrowing the wall, to the "blooming" of water, and sometimes the fish are dying from excessive heat. Therefore, the aquarium is recommended to install a wall, perpendicular or opposite the window. In all cases, to avoid leaking aquariums need to put on an absolutely level of a horizontal surface.