What Kind of Water for Betta Fish? | Bettafish.org
But checking pH is very important as wrong pH causes stress among fish. Test your aquarium water to make sure it isn't too alkaline for your fish. Tropical fish like Tetra, Betta, Barb, Catfish, Bichir and Corydoras like pH in the range of 6.5 to 7. A tank with higher pH may cause freshwater fish …
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