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  1. #1

    Default 2.5 weeks into cycling with fish

    0 Not allowed!
    Hello everyone, in the states is faring well in this extreem heat up and down the east coast

    Anyway, back to aquariums.

    Im about 17 or 18 days into cycling with fish. My ammonia, nitrite, and nitrate are as follows.

    Ammonia: .5PPM

    Nitrite: 0PPM

    Nitrate: 15-20PPM

    I have been doing daily water changes, i will do one today to get the ammonia down to around .25PPM

    at first the Nitrite level was a little high, but it has since stabilized.

    Does all this look ok? Am I on the right track here?

    Thanks all.


  2. Default

    0 Not allowed!
    It looks like you are on the right track. Keep on doing those water changes to keep the ammonia down like you said. Sounds like you are doing a great job! It looks like your hitting the home stretch and almost done.

    I'm not sure why you got nitrites and now have ammonia again though. Did you clean your filter or anything like that?

  3. Default

    0 Not allowed!
    Looks cool to me.

    Did your Nitrite go up, and then down to 0 on it's own? If so you're just about done. I'd get as much bio media in your filter as possible just to make sure you can grow enough bacteria for your ammonia.

    Not long now! :)
    130g: 4 Angelfish, 2 Roseline Sharks, 12 Conga Tetras, 5 Kuhli Loaches, 1 Otocinslus, 1 Corydora

  4. #4


    0 Not allowed!
    If your nitrite levels spiked, and then lowered to 0, and you're seeing nitrates then I would say that you've finished cycling the tank. The fact that you're still reading ammonia is strange though. I would suggest testing your tap water, and see if those tests come back positive for ammonia.

    If it does come back positive, it's because of chloramines in the tap water. Chloramine is basically chlorine mixed with ammonia.

    Does your dechlorinator detoxify ammonia?
    Three-fourths of the Earth's surface is water, and one-fourth is land. It is quite clear that the good Lord intended us to spend triple the amount of time fishing as taking care of the lawn. ~Chuck Clark

  5. Default

    0 Not allowed!
    I just started mine..fishless...i was told If you perform a water change to reduce these levels while the aquarium is cycling, you will only be delaying the completion of the cycle.

  6. #6


    0 Not allowed!
    Quote Originally Posted by twinkey
    I just started mine..fishless...i was told If you perform a water change to reduce these levels while the aquarium is cycling, you will only be delaying the completion of the cycle.
    twinkey, you missed that they are doing a fish based cycle. Their ammonia is high except for tough fish - most fish based cycles use no more than 0.25 ppm ammonia.

    bsmith48 - keep doing what you are doing; unless as escamosa says and your tap has 0.5 ppm ammonia, then your cycle is likely complete; still, your ammonia level should be cleared by the filter within 24 hours. If not, while much of both types of bacteria have grown, you need more bacteria in the filter before adding anymore fish. Your ammonia should always be zero after 24 hours - no exceptions on that even if the tap is 0.5 ppm ammonia (or even if it has some nitrite, as well) - the filter should handle that too!

    Best of luck - fish based cycling often takes four to six weeks so you are nearly there.
    Knowledge is fun(damental)

    A 75 gal with eight Discus, fake plants, and a lot of wood also with sand substrate. Clean up crew is down to just two Sterba's Corys. Filters: continuous new water flow; canister w/UV, in-tank algae scrubber!! Finally, junked the nitrate removal unit from hell.

    For Fishless cycling:

  7. #7


    0 Not allowed!
    Thanks for all the quick responses everyone. I use a dechlorinator that takes care of chlorine and chloramine. I am also a little suprised that the nitrite spiked, then went down to 0, but the ammonia is still high. I tested my tap water and it has 0ppm ammonia. My tank is 75 gallons, but i have a canister filted for a 110 gallon tank. It has activated carbon, a sponge, and this bio-filter beed things. I think after a week or 2, the bacteria will build up enough to take care of the remaining amounts of ammonia.


  8. #8


    0 Not allowed!
    I'm surprised too - generally, the 0 goes down and stays down at 0 once nitrItes appear. By the time you are seeing nitrAtes, the ammonia should consistently be 0 because the ammonia eating bacteria have already grown in a sufficient #. I'm wondering if your filter isn't sufficient as Mandy suggested. In general, it is recommended to have enough filtration for double the size of your tank.

  9. #9


    0 Not allowed!
    What i may have to do is get maybe a 50 gallon hang on filter to add extra biological media.

  10. Default

    0 Not allowed!
    I am fishless cycling and my ammonia dropped to 0ppm. Nitrite spiked and went to 0ppm. Nitrate is showing 5ppm. Now ammonia has been stuck on 2ppm for a few days. Why isn't ammonia going down to 0ppm?
    Using Tapatalk

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