Nitrate level to high in Marine tank

Discussion in 'Beginner Discussions' started by greenie, 22 May 2010.

  1. greenie

    greenie

    Joined:
    5 Apr 2010
    Posts:
    129
    Likes Received:
    5
    Location:
    kemptonpark
    Hi,

    My tank (90 liter) is now 6 months old and currently have - 1 clownfish, 2 damsel, 1 firefish, 1 goby, 1 shrimp, 1 porcelain crab and 2 soft coral.

    Today I have done a 40% water change. The Ph, Ammonia and Nitrite test OK but the Nitrate test at 40ppm.

    Can someone please tell me how I can successfully lower the nirtate level? (I believe it is still to high?)
     
  2. AdS Guest




    to hide all adverts.
  3. Annoying

    Annoying

    Joined:
    14 Jun 2009
    Posts:
    2,107
    Likes Received:
    23
    Location:
    Port Elizabeth
    A test of nitrates 40ppm is deffinetley to high. The most common reason for this is there is to much nitrites in the water. Even thoug your test may read that the nitrties are in check the reason for them not showing is that algae is using it up(do you have a algae bloom at the moment). Your tank is still young and will still have some algae blooms. Did you maybe add new fish,this can cause a temerary rise in aquarium levels but will quickly fall back in place.
     
  4. greenie

    greenie Thread Starter

    Joined:
    5 Apr 2010
    Posts:
    129
    Likes Received:
    5
    Location:
    kemptonpark
    Thanks, there is actually a "algae bloom". I did not add any new fish to the tank.
     
  5. Annoying

    Annoying

    Joined:
    14 Jun 2009
    Posts:
    2,107
    Likes Received:
    23
    Location:
    Port Elizabeth
    That could be the problem as an algae bloom causes a raise in both nitrites and nitrates. The nitrites get used up and the product of the nitrites are nitrates, thus giving you a high amount of nitrates and almost no nitrites.
     
  6. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    69
    Location:
    Cape Town
    Hi Greenie - can you please post pictures of your tank and filtration system?

    Do you have a decent sized skimmer? Do you have/use macro algae to remove nitrates?

    Are you still using a canister filter or bio-balls?
     
  7. greenie

    greenie Thread Starter

    Joined:
    5 Apr 2010
    Posts:
    129
    Likes Received:
    5
    Location:
    kemptonpark
    The skimmer (Berlin Airlift) works quit well. I am currently using a canister filter. Is Macro Algae available at the relevant petshops?

    (what about the use of NitrateMinus liquied?)
     
  8. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    69
    Location:
    Cape Town
    Greenie - sorry to say mate - you will find out what the meaning of "works quite well" is, once you have switched over to a skimmer with a pin-wheel impeller. I too had one of those skimmers you are talking about. Believe me - they are really not that good. IF you had a counter-current/airstone skimmer that stood 2 meters tall, with a blower that puts out at least 1400 liters of air per hour, then I would say "it works well".....

    No chemical compound would resolve your issues at this stage - can you please confirm how much, and how often do you feed?

    Also - what is the total water volume of your tank?

    Macro algae should be given away for free - ask a fellow reefkeeper that stays close by - or perhaps works close to you. They can give you some chaetomorpha for free.

    You just need a sump and some decent lighting to allow the chaetomorpha to grow.

    This would help you in removing extra phosphates and nitrates from the water....
     
  9. mnd123

    mnd123

    Joined:
    5 Mar 2008
    Posts:
    1,753
    Likes Received:
    14
    Location:
    Fourways Gardens
    You dont mention live rock or a DSB, remember that the nitrogen cycle requires aerobic and anaerobic bacteria to finish the cycle (ie: convert ammonia->nitrite->nitrate->nitrogen) and the Nitrate (NO3) will only break down to Nitrogen in anaerobic conditions. Sounds like you have a half finished nitrogen cycle.

    tell us about your LR and DSB
     
Recent Posts

Loading...
Similar Threads - Nitrate level high Forum Date
UV Filter and High Nitrate levels General Discussions and Advice 12 Jan 2011
Help Nitrite, Nitrate and Ammonia levels are slightly high Beginner Discussions 26 Feb 2008
Nitrate levels low Fresh Water Tanks Discussion 12 Sep 2013
Nitrate Level and Brown Algae New Members 20 May 2012
Using sugar to lower nitrate levels General Discussions and Advice 28 May 2010
Reducing Nitrates & Phosphates Water Parameters and Additives Monday at 15:15
Nitrates too low? Water Parameters and Additives 4 Nov 2016