Acid

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A term used by aquarists when talking about water conditions and its ph value. Water is said to be acidic if it contains hydrogen ions.

  • Water with a ph lower than 7 is said to an acid.
  • Acidic water can be high in carbon dioxide. This is called Carbonic acid.
  • In a planted aquarum the plants will give off carbon dioxide when the lights are turned off, this will make the water become more acidic.
  • Some species of fish have difficulty breeding in non-acidic water even though they can live quite happily in alkaline water. Neon tetras and Cardinal tetras are the most commonly know examples.



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