Ph Problem

Discussion in 'Freshwater Aquarium Builds' started by louiec4413, Feb 9, 2018.

  1. louiec4413

    louiec4413New MemberMember

    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

    DemeterFishlore VIPMember

    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

    CraniumRexWell Known MemberMember

    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?