Welcome to Our Community

Wanting to join the rest of our members? Feel free to sign up today.

My nitrates dropped...

Discussion in 'Cycle your Tank' started by Geoluk, Dec 4, 2019.

  1. Geoluk

    Geoluk New Member

    Joined:
    Dec 4, 2019
    Messages:
    1
    Likes Received:
    0
    I set up my 30g tank 3 weeks ago. I was advised to use a hardy fish as an ammonia source so I got a young bn pleco 12 days later. Although I learned afterwards that it's a bit controversial he seems to be well with good energy and appetite. Using a Sera liquid test kit 5 days ago the results showed 0 ammonia, 1mg/l nitrites and around 25mg/l nitrates. But the last 3 days I've been taking 0 ammonia and nitrites and probably no nitrates (indication colour is deep yellow). I have no live plants and I made no water changes. I feed my pleco every second day with small amount of sera wels-chips and the rest he feeds on the little algae that has grown. I use a canister filter Eheim 2213 classic with sera Siporax bio filter media, 1 blue Eheim sponge, some activated carbon and Eheim green fiber. What is the cause of nitrate drop?? Could it be too soon to tell? Is it possible that some denitrifying mechanism is going on? Should I correct something? I'm looking forward on your response cause I found almost no info about my situation on the internet
     
  2. Deanasue

    Deanasue Moderator
    Staff Member Moderator Global Moderator Tank of the Month Winner!

    Joined:
    Oct 29, 2018
    Messages:
    3,899
    Likes Received:
    557
    Location:
    USA
    Hmmm. No water changes done. Odd. Can you get some bottled bacteria like Safe Start+ and see if it kicks things back into gear? Just don’t use Seachem Prime for 24 hours after adding the bacteria or it will destroy it. After 24 hours it’s fine to use. I’d remove the charcoal for now too.
     
  3. seangee

    seangee Member

    Joined:
    Feb 16, 2008
    Messages:
    1,909
    Likes Received:
    303
    Location:
    Berks
    Are you using a liquid (e.g. API) test? Sometimes you get a false negative if you don't agitate the reagents enough.
     
    • Agree Agree x 1
  4. Metalhead88

    Metalhead88 Fish Crazy

    Joined:
    May 31, 2019
    Messages:
    302
    Likes Received:
    49
    Make sure you're doing the test correctly.

    Nitrates should not go down without a water change or plants removing it.
     
  5. Fishmanic

    Fishmanic Moderator
    Staff Member Moderator Global Moderator Tank of the Month Winner!

    Joined:
    Sep 23, 2013
    Messages:
    2,302
    Likes Received:
    440
    Location:
    Northeastern USA
    Do you have plants in your tank? Plants can soak up some nitrates... especially floating plants like duckweed.
     

Share This Page