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.