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Ph Problem

  1. louiec4413 New Member Member

    hi was wondering if anyone would know why my ph is 9.5 in my 55 gallon cichlid tank ? Tap water reads 7.5
  2. Demeter Fishlore VIP Member

    What is the substrate? Substrates can have an effected on pH.

    Sometimes the pH will change a day or two after letting the freshly drawn water age. Chemistry can explain why, but chemistry isn't my best area ;) I suggest you test the tap water again after letting it set out for a couple days.
  3. CraniumRex Well Known Member Member

    Would need a few more details - Demeter might well have your answer already.

    pH, KH and GH are woven together and have a distinct relationship. Would you happen to know your KH and GH values?

    For sure let the tap water sit out - you can also put a bubbler on it to see the effect of outgassing, or even shake the daylights out of it for a faster (albeit less precise) result.

    What else do you have in your tank? Cichlids spell rocks for me - do you have a lot and do you know what they are?

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