Ammonia Ammonium

ammonium ammonia

What is ammonia?

Ammonia (NH3) is the most toxic nitrogenous compound formed in an aquarium. It is able to quickly kill fish or cause them various diseases. Ammonia occurs as a result of the decomposition of organic waste, which is produced during the life of aquarium

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Ozone poisoning treatment

dead fish


Ozone (Oz) consists of three oxygen atoms and is also a strong oxidizing agent. It is also used to disinfect water. As a result of the rapid and complete decomposition of ozone (Oz) to oxygen (O2) on the way from the waterworks to our apartments, ozone is no longer present in our drinking water.

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Symptoms of chlorine poisoning in fish

chlorine poisoning in fish


At many pumping and water supply stations, chlorine is added to drinking water as a disinfectant. Chlorine can be added to water in various forms: either as elemental chlorine gas, as chlorine dioxide, or as hypochlorous acid (an aqueous solution of chlorine gas). The disinfecting effect is based on a series of reactions of chlorine or chlorine dioxide readily soluble in it. Two different chlorine compounds are formed: hydrochloric acid (HCl) with a low oxidation state of chlorine and hypochlorous acid (HCl) with a high oxidation state of chlorine.

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Hydrogen sulfide poisoning symptoms in fish

dirty aquarium


When the fish are over-fed at the bottom of the aquarium, the anaerobic environment is formed from the remains of food, detritus, and feces, in which nitrates are converted to nitrogen. But what happens if, as a result of anaerobic decomposition of organic compounds, nitrates will no longer remain?

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Aquarium clear water

clear water

Both professionals and novice aquarists may encounter such a phenomenon as a change in the shade of the water in the aquarium and its clouding. There are many reasons why this happened, but not all of them are actually dangerous. Why does the water in the aquarium sometimes get cloudy and how to deal with this phenomenon?

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