How Big Of A Water Change?

Discussion in 'Freshwater Beginners' started by emmysjj, May 20, 2018.

  1. emmysjj

    emmysjjWell Known MemberMember

    Just tested, my ammonia is 0, and both my nitrites and nitrates are sky high. How big of a water change do I need to do?
  2. Fanatic

    FanaticFishlore VIPMember

    You are cycling?
    I would do a 25 - 5o percent water change if your nitrItes are over 2PPM, that stalls a cycle.
  3. OP

    emmysjjWell Known MemberMember

    Yes, I am cycling. Do I treat new water with Prime like always?

  4. Mom2some

    Mom2someWell Known MemberMember

    I don’t recall if you are doing fishless or fish in. If fish in - do like a 75% change, dose Prime for the full volume of the tank. If fishless - enough to bring nitrites down below 2 as mentioned above.
  5. OP

    emmysjjWell Known MemberMember

    Fishless :)

    Did a 50 percent water change before I saw you comment, @Mom2some. 0 ammonia, 0.75 nitrites, and above 80 nitrates. Should I do another water change?
    Last edited by a moderator: May 20, 2018

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