The illumination of the sea. In the Black sea there is a sparkling glow due to the outbreaks of small and microscopic marine organisms (nochesvetka, peritonei) and representing a single same color sparks. The intensity increases with excitement, the passage of a vessel, etc. Sparkling luminescence is usually observed in summer and autumn. It is particularly intense in the coastal zone.
Flowering sea due to the massive accumulation of planktonic (usually vegetable, but sometimes animals) organisms in surface water. At flowering significantly reduced water clarity and change its color; water becomes yellow, brown or reddish tint. In this area the algal blooms observed mainly in the northwestern part of the sea, as well as in gulfs and bays. It is possible throughout the year, but most likely from February to may.
Algae. In the Black sea is particularly prevalent red algae — Phyllophora that forms in the northwestern part of the sea at depths of 20-60 m huge bushes. From other algae it should be noted diatoms, perogitive, blue-green and brown. In the bays, estuaries, lagoons and bays at depths of usually not more than 10-12 meters often found in the Zostera, or sea grass. Continue reading
Guppy is quite a peaceful fish. They will not offend their neighbors in the aquarium, as it is not capable of such atrocities. But other types of fish will be happy to plucking tail fins of guppies, thus causing them to suffer.
Representatives gourami are labyrinth fish that can breathe with gills not only, but also a special body metabolizing oxygen from the air at the water surface. Gourami antennae sticking out of the abdominal fins have a tactile function.
Acidity of water for them is not critical, only that it was not salty. Enhanced aeration is also not mandatory. Enough of the General conditions of detention of fish.
Catfish like algae, but they should not be too much, just 5-6 branches per 50 liters of water. Continue reading
For various reasons you prefer the aquarium to the small size. Maybe he is a great addition to the interior or the aquarium gave you friends… it doesn’t matter, the main thing that you have and now you need to pick up a fish.
So in the aquarium was maintained biological balance, we need a serious approach. Consider the number of fish, plants and other inhabitants under a certain amount.
Overpopulate the aquarium, in any case, it is not recommended. The formula for calculating this, at a fish length of 2.5 cm (measured without the tail), requires a 75 sq. cm the surface of the water. This calculation is suitable for all aquariums. For example, have a tank volume of 30 liters and 40 (length) x 25 (width) x 30(height). Calculate the surface area, 40×25 =1000 sq cm the Next step, the calculation of the number of fish, in this case 1000 / 75 x 2.5 = 33cm. That is, the total length of fish for the aquarium will be 33 cm
Do not put in small aquariums predators. Ask the seller the maximum size of the fish you plan to purchase. Continue reading