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
Many aquarists aquarium catfish love for these small fish belonging to the order of catfishes of ray-finned class, not only pleasing to the eye with their cute whiskered faces, brightness and variety of colors, but these are cleaners, nurses aquariums, cleaning aquarium from the rest of the feed and its walls – from the slime, algae and other fouling.
To describe in one article all
this wonderful fish is impossible: collective term “soma” refers to over 3000 species from 36 families, of which more than 800 kept in aquariums across the world. So in this article we will cover the most common ones.
The most popular, classic type of aquarium catfish is mottled corydoras (Corydoras paleatus), which belongs to the family of armored catfishes. As this and other tetras hiding peace loving, unpretentious, active and not grow to a large size. Feed these amazing fish food left over from other fish, and live well with other species. Continue reading
I think, in the Black sea swam many of our readers, and more — just heard about it. Indeed, the Black sea is one of the most interesting (and beautiful) seas in the world, including their historical significance.
1. In the Black sea is a very interesting distribution of currents. Two major currents, and that’s a huge cycles with a wavelength of about 400 kilometers. In honor of the scientist who discovered these currents, called them “Glasses of the Knipovich”.
In addition, in the Black sea inhabited only the upper layer of the water column. All because at the bottom of the sea huge amounts of hydrogen sulfide, rising and middle layers.
Life occurs to a depth of about 150-200 meters, and then, as has already been mentioned — hydrogen sulfide. It reacts with iron, attached to the anchors ancient mariners black. Maybe that’s why the Black sea got its name. Continue reading