From 11 to 19 June this year, the State ecological inspection in the Nikolaev area repeatedly documented fish kills in the rivers the southern bug, Ingul and the Bugsky estuary. In this regard, we selected 22 samples of water and held control for the major pollutants.
As reported in a press-state ecoinspection service in the Nikolaev area, in the surface layer recorded water dissolved oxygen for the entire period from 0.9 to 10.5 mg/DM 3. The ratio — during the summer, the oxygen content in all water bodies should be not less than 6,0 mg/dm3 .
The oxygen is released into the water column as a result of processes of photosynthesis, which better takes place in the daytime. At night there is a reverse process. Therefore, the minimum content of oxygen is observed at dawn, which was recorded on June 19, in 6 hours (the water temperature was 25 0 C). The concentration of dissolved oxygen ranged from 4.0 mg/DM 3 the water surface to 0.2 mg/dm3 in the bottom horizon. This fact is due to the hydrometeorological conditions prevailing in the present time, what is the likely cause of the phenomena zamorny. Continue reading
Since this problem of discharge is not simple, its planning should be approached carefully, thoroughly studied the issue. First, we determine which part of the site will be a pond. It is best if the pond will be viewed from all angles of your garden. Or, at least, it can be observed from the Windows of the house.
Great importance in the effective operation of the artificial pond is played by the vegetation. Created trees and shrubs shade regulates water temperature, provides the required living conditions of the inhabitants of the pond.
Choose aquatic life
Traditional and unpretentious inhabitants – carp, tench, IDE. Here only these secretive fish, so will hide, holding at the bottom. More exotic look ponds inhabited by colourful representatives of the family of carp – the koi. However, these fish need a fairly deep pond. Very popular among gardeners-designers these kinds of aquatic life, as bleak, minnow, verhovka. Continue reading
Golden catfish (bronze tetras hiding) is a benthic fish of the family of armored. Its name they received because of the unusual coloration that varies from light silver to copper tones. There are also albinos. Mouth of a catfish is located at the bottom of the head and equipped with sensitive antennae, which serve as supplements to the organs of taste and touch, and also allow to find food and navigate in complete darkness. Females are larger than males and have more rounded dorsal fin.
The content in the aquarium
Tetras hiding have peace and quiet temper, therefore, can coexist in an aquarium with any other fish. Their body is covered with rows of bony platelets, which are reliable protection against aggressive larger fish, but, despite this, it is better to settle them with proportionate neighbours and, preferably, without competition for food on the bottom. Continue reading