Cycling question- Nitrites not dropping.

Discussion in 'New to Saltwater & Reef Aquariums? Post Here' started by dino_aus, May 16, 2018 at 3:57 AM.

  1. dino_aus

    dino_aus New Member

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    Hi all,

    just a quick question about my 120L tank I am cycling with Live Rock. It has been cycling for 35 days now and I seem to have some issues with My nitrites not dropping. The most recent test I did showed the below. Just wondering if I should give it a bit more time for the nitrites to dissapear or look to do a water change? All other parameters seem fine.

    Ammonia- 0.25 mg/L
    Nitrites- 4ppm mg/L
    Nitrates - 30ppm mg/L

    Thanks
     
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  2. RobZilla04

    RobZilla04 Member Build Thread Contributor

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    You can try a water change. There are products (Niteout comes to mind) which claim to help reduce nitrites, although I'd stick with a natural water change first. Which test kit are you using? Occasionally, especially the API kit, will show color on the nitrite test kit which are really just elevated nitrates (+20ppm).
     
  3. ihavecrabs

    ihavecrabs Valuable Member R2R Supporter Reef Squad R2R Excellence Award Article Contributor Build Thread Contributor Partner Member 2018

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    Hey @dino_aus ! #WelcometoR2R !

    I believe your results are expected at this time and you can continue on. While you still have ammonia present, it will continue to convert to Nitrite. Are you dosing Ammonia often as part of your tank cycle?

    General rule of thumb is that your tank should be able to process 1ppm ammonia in 24 hours or less after dosing it. Typically, Nirtite will also be 0 when your tank is able to process this quickly. Once you get to the point that ammonia is not present and the tank can handle 1ppm in 24 hours, you can begin slowly adding livestock. I'd suggest 1 fish at first for a few weeks and then another.
     
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  4. dino_aus

    dino_aus New Member

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    Thanks for the replies,

    I am putting in fish food every other day but that is all I am putting in. I might just give it a Bit more time and see how it goes. It's my first saltwater tank so want to make sure it's cycled properly before adding any fish.
     
  5. recess62

    recess62 Well-Known Member CTARS Member

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    Give it time. Took my 90 6 weeks for its cycle to complete. Hang in there
     
  6. ihavecrabs

    ihavecrabs Valuable Member R2R Supporter Reef Squad R2R Excellence Award Article Contributor Build Thread Contributor Partner Member 2018

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    A good quality live bacteria might be worthwhile if you haven't already added one. Not required though.
     
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  7. Jesterrace

    Jesterrace Well-Known Member

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    Agreed. I would chuck the API kit in favor of something like Salifert or Red Sea. Among my list of complaints: The occasional false positive for ammonia, nitrate color chart where you can't tell the difference between 10-20, 40-80, caps on the vials that don't seal properly and leak all over the place when you shake them, skinny vials that are a pain to clean out properly, no syringe included to measure test sample, the 5mL mark on the vials isn't actually 5mL, and the fact that the color chart is on the back of the instruction manual and not at all water proof (which in light of the aforementioned leaky caps is a real problem).
     
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  8. Cody @ChaosAq

    Cody @ChaosAq Member

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    I would be a little cautious as to adding in fish food when there is not any fish in the tank yet. I agree with some of the other members in that you should definitely be doing some water changes and possibly adding nite-out which I used religiously for a while.
    The issue with adding the fish food is that it will rot in the tank and continue to jack up your nitrates. It sounds like you are on the right track for now though! Keep us posted on your levels when you get the chance!
     
  9. PatW

    PatW Well-Known Member

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    You are getting significant nitrates so you are well on your way. You really are not done cycling until both ammonia and nitrites are 0. The API test can give a low reading of ammonia even when it is zero. So if you are using API, you might want to confirm the result by taking a sample to your LFS.

    As said before, a robust system should be able to convert 1 ppm of ammonia to 0 and 0 nitrites and just nitrates left in 24 hours.
     
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