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  1. #11

    Join Date
    Oct 2012

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    0 Not allowed!
    Quote Originally Posted by dborregoa
    I've been reading about doing a fishless cycle with Ammonia and that's probably what I'll end up doing.

    Can anyone tell me, loosely, how much ammonia to add to a 75 gallon tank. I know that the amounts vary and the general reading should be 4-5ppm, I just need to know a quantity to start with.
    When I did my 55 gallon I used the Ace brand ammonia. It believe it was 10% strength.

    I dosed 5ml (used a test tube from API test kit as measuring device) and it brought ammonia up to around 5ppm.

  2. #12

    Join Date
    Sep 2012
    Williamstown, NJ

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    0 Not allowed!
    Here is a calculator I found online. It worked well for me.

  3. #13

    Join Date
    Jan 2010
    Saskatchewan, Canada

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    0 Not allowed!
    This thread is a great example of why you can not always trust the on-line calculators to tell you how much ammonia to add to your tank. Johndimo used 5 ml of a 10% solution to get around 5ppm of ammonia in his 55 gallon tank while the above link tells you that a 5 ml amount of 10% ammonia will give you 9ppm in a 55 gallon tank.

    While those calculators may be somewhat accurate at times, I have never found them to be reliable. There are far to may variables that pop up for those calculators to be accurate in all conditions. I've tried a few different ones as well.

    The best is approach is to add a bit, wait, test, and re dose as required. That had always worked best for me

    Just my $0.02
    Last edited by Cliff; 12-06-2012 at 09:16 PM.
    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=""]

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