Hello, community of acuariopeces.com
How many times did we change the water and the aquarium or plane were destabilized, some or all of the fish died. Here a number of causes. . . . . . . . . . .
1.- Temperature increase too fast (Changes with hot water).
In the blood of the fish, gaseous bubbles are formed, which can cause an embolism (obstruction of the blood vessels) and therefore death from the so-called bubble disease. Fish, on the other hand, and contrary to what is popularly believed, withstand a slight decrease in temperature, as happens every night, in their wild habitats and in our aquariums. Even in the majority of species it stimulates the disposition for reproduction, because when noticing the addition of fresh water and consequent decrease in temperature, together with the agitation of the organic matter that occurs when the water is poured, they identify it with the time of rains and instinctively start the zeal. In general, the temperature difference should not exceed 3є C.
2.- Alteration of the ph.
If the value of the ph., Is diverted too much, towards the alkaline zone, by the change of water, the ammonium dissolved in it will be transformed into toxic ammonia.
3.- Drinking water taken directly from the tap.
Being subjected to a pressure of several bars, the tap water contains too much dissolving air, we can see it when we first fill an aquarium and see the bubbles that form in the glass and objects. When this pressure is relieved, the excess air is released, distributed in the form of innumerable gas bubbles throughout the aquarium, including the gills of the fish, where they cause serious respiratory disorders and in acute cases death.
4-. Copper poisoning
It is known that hot liquids have a greater capacity for dissolution. When we use, hot tap water, as a rule, it has acquired a temperature through a home heater, which in 90% of the cases has resistances composed of said metal and that dissolves as the water passes. Another case is the dissolution of copper in water, in domestic networks equipped with channeling, by copper pipes, which fortunately are less and less used. Because in certain circumstances and depending on their concentration, they can cause the death of the bacterial colony of our filters, and later of plants and fish. The effects of copper are more toxic the more acidic and soft the water.
Therefore, we must avoid using hot tap water and even if it is cold to let the tap water run to eliminate possible high concentrations of the pipes.
5.- Too strong changes in water values.
An excessive modification of the previous values of the water (Ph., Oxygen content) due to the change of the same one, can cause the death of the leaves of some aquatic plants, especially of the cryptocorine.
The higher the water temperature, the lower the oxygen concentration.
Well with this simple information, we can make changes without endangering our organisms.
Greetings to all members of this forum.