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Results 1 to 4 of 4
  1. Default Is it normal for pH to drop during cycling???

    0 Not allowed!
    I'm hopefully near completion of a fishless cycle. I started out with an accidental ammonia overdose of 8. My nitrites got up to 5 or above. Ammonia started falling and while nitrites were high I kept dosing for ammonia to stay between 1 and 2. So now nitrites have finally dropped to 1. And nitrates are about 80. So I'm hoping to stock fish soon. But I just checked pH for the first time in a while and saw that it was at 6.0. Wow. Is this normal? I figure the large water change that will be needed to lower nitrates will also take care of pH, but wondered is this normal? Fortunately our tap water is about slightly base, 7.4ish, so I'm not overly concerned, nor do I plan to alter it with chemicals. Just curious more than anything and also hoping to get feedback to make sure I'm on the right track?

  2. #2

    Join Date
    Feb 2010
    Ypsilanti, Michigan

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    0 Not allowed!
    yes. Ammonia concentrations lower pH. Don't worry about pH at all while doing a fishless cycle.
    300 gallon mega tank: sailfin pleco, clown loaches, silver dollars, roseline sharks, congo tetras, new world cichlids
    125 gallon office tank: Africian cichlids, synodontis catfih
    75 gallon community tank: bolivian rams, black skirt tetras, dwarf neon rainbowfish, corys, harlequin rasboras, otos, bristlenose and bulldog plecos, assassin snails, various shrimp
    60 gallon goldfish tank: fancy goldfish

  3. #3


    0 Not allowed!
    You will notice your PH has stablized when your cycle has finished and you have completed a 90% + water change before adding your first fish

    It's normal for your PH to get out of whack during the cycling process. With your ammoina and nitrite at toxic levels, it will effect the overall water quality including PH. I'm no chemist so I can offer a more detailed explaination than that

    At least everytime I have cycled a tank it has worked that way.

    I don't even test the PH until after I'm done cycling anymore.
    If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
    "Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
    Fishless Cycle Cycling with Fish Marine Aquarium Info [URL=""]

  4. Default

    0 Not allowed!
    Great, that's what I was thinking. Thanks a lot!

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