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Thread: nitrates

  1. #1
    Senior Member C-Dub's Avatar
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    nitrates

    well i am having a huge battle with nitrates right now.(they are in the 125-160 range) and im wondering if raw mussels will add nitrates to the water.
    33g tank
    60 pounds of lr
    1 clown
    1 black harbour goby

    75g in the works

  2. #2
    Senior Member Ricepicker's Avatar
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    when they rot, ammonia -> nitrite -> nitrate

    theres lots of ways to clean up water

    water canges, fuge, DSB, oyster shells... which one are u using

    what kinda siystem? FOWLR?

  3. #3
    Senior Member C-Dub's Avatar
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    im using the water changes method but its not working very well(done about 60 percent water change in 2 days)
    33g tank
    60 pounds of lr
    1 clown
    1 black harbour goby

    75g in the works

  4. #4
    Senior Member C-Dub's Avatar
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    ok so i did a 50 percent water change today and my nitrates has barly even moved if so at all. any ideas?
    33g tank
    60 pounds of lr
    1 clown
    1 black harbour goby

    75g in the works

  5. #5
    Senior Member Ricepicker's Avatar
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    maybe theres too much detris in the sandbed?

    try having a nutrient exporter like macro algae

  6. #6
    Moderator cres's Avatar
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    A 50% water change should cause a 50% drop in Nitrate. Period.

    If it doesn't there is one of two problems:
    1) Bad test kit. You can try another kit. Make sure it is marine compatible. Salifert is a good brand.
    2) You have Nitrates in your source water. You should test your new water before adding it to the tank. If it has Nitrates, consider a different source for your water.

    If you do a water change and the level comes back up to 100+, then you might have a problem within your tank.

    HTH
    Sarchasm: The gulf between the author of sarcastic wit and the person who doesn't get it.

  7. #7
    kat
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    looking at the avatar, you have a huge bioload for that size tank...plus you mentioned that you are taking out all the bristle worms...are you sure the sand bed isn't being disturbed?

  8. #8
    Moderator cres's Avatar
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    Kat's points are valid, you do have a fair load for a 33 gallon tank.

    But, if you replace 50% of your water, your Nitrate should immediately drop to 50% of the pre-water change value. It may rise back quickly. Be sure you aren't adding Nitrates with you change water and top off water and that your test kit is valid.

    Are you using a gravel vacuum when you do water changes? Disturbing an established sand bed can lead to problems, including increased Nitrates.
    Sarchasm: The gulf between the author of sarcastic wit and the person who doesn't get it.

  9. #9
    Senior Member geekreef_05's Avatar
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    Cres, are you SURE about that? Isnt nitrate measured on a logrithmic scale? I thought it was...or at least its a non-linear scale, i had thought.

    As Im mulling it over I really dont recally, but thats the impression i was under.
    "Mmmm...Skimmate"

  10. #10
    Senior Member C-Dub's Avatar
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    well as it turned ut my nitrates were just that high(i had it calculated to be around 1200)

    i halved my bioload aswell
    33g tank
    60 pounds of lr
    1 clown
    1 black harbour goby

    75g in the works

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