RobbeThe water in Lake Tanganyika is rather hard and very alkaline. Further it is very stable, i.e. its constitution hardly changes during the seasons. The cichlids in the lake have adapted themselves to these particular conditions, and are thus used to swim in water with a pH of about 9, a conductivity of about 600 microSiemens, and a temperature of 26.5 C . In my experience the hardness or the conductivity of the water plays a minor role, but the pH is very important. The pH of the water in the aquarium should, therefore, be in the range between 7.8 to 9.5 in order to have an optimum output by the breeding colony. If the pH is below pH 7, T. duboisi hardly breeds and is very vulnerable to all kinds of diseases. At a pH of 6.5 T. duboisi will die in a short period of time. Acidic water (a pH lower than 7) can be suited for Lake Tanganyika cichlids by adding salts. Not the regular table salt (NaCl) but carbonates. A mixture of one part NaHCO (hydrogencarbonate) and one part (carbonate) added to the water raises the pH to about 9.5. It depends on the conductivity of the water how much of this mixture should be added. You will have to experience with that. Therefore the salts are mixed before they are dissolved in the water. Such a mixture acts as a buffer; so, even if you have dissolved too much, the pH will not be higher than the pre-set pH 9.5. Another possibility is to use marine salts. These are readily available in aquarium shops. They give a pH of about 8.3, which is sufficient for T. duboisi . We give as much of this salt as is necessary to raise the pH to 8.3. Avoid making the water too salty. If the water, you start with, is very soft, you will need only a little salt. If the water is hard, but does not have the right pH, it is better to use the Na /NaHCO mixture. The temperature of the water should be between 25 and 27 C. Temperatures above 29 C are detrimental to all Tanganyikan cichlids.
Har själv Maswa men är skit dålig på engelska någon som skulle vilja översätta denna del?Jag fattar så pass mycket att jag fattar att det handlar om PH värdet men vad är det han menar med hur man höjer PH:et?Kan man det med bara salt?
Hej
Det är ganska plenty med text, kontentan är att vattnet i T-sjön är stabilt, varför fiskarna är känsliga mot förändringar, att pH är det viktigaste, man kan förbättra vattnet och att det lönar sig att mäta vattenvärdena.
pH kan man höja med en blandning av natriumkarbonat (NaHCO3) och natriumbikarbonat (Na2CO3), det förra höjer och det senare buffrar pH. Ovan rekommenderas lika delar, själv brukar jag ha ca 1/3 natriumkarbonat och 2/3 natriumbikarbonat. Man får mäta och experimentera sig fram. Mät även konduktiviteten eller ledningsförmågan, den borde ligga på 600-650 µS/cm, om den är lägre kan man ytterligare tillsätta magnesiumklorid. Vanligt salt (koksalt, NaCl) hjälper inte.
