High Nitrate

Discussion in 'Water Parameters and Additives' started by Pugsly, 4 Nov 2009.

  1. Pugsly

    Pugsly

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    Hi all,

    Had mny water tested by a few people now. Everything is great except my nitrate. all readings are between 100mg/l and 250mg/l depending how soon the test was done after a water change.

    I have up'ed my changes and increased the amount I change from 20% to 30% but the level drops for a day then its way high again. What can I do to get this to drop to acceptable levels. Any filter medium or such? Any type of chemicals to add?

    Thanks - hope you can help
     
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  3. dallasg

    dallasg Moderator MASA Contributor

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    sorry to hear, i had a similar problem in one of my tanks, here is what i did.

    i searched the gravel and rocks for obvious signs of build up and cleaned and increased flow...
    i then looked for anything out of the ordinary in the sump, increased skimming and checked my RO water.

    after all that i added tons of culerpa, and that brought mine down to around 10ppm, and a starfish to eat all the left overs and decreased my feeding to once a day
     
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  4. Pugsly

    Pugsly Thread Starter

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    thanks for the info Dallas - I will do the same then tonight.

    Is there nothing chemical that can "bind it" that the skimmer then can remove? I am skiiming wet at the moment too.
     
  5. dallasg

    dallasg Moderator MASA Contributor

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    since nitrate is at the end of the nitrogen cycle, thats where the dsb comes in to convert it to nitrogen etc, how is your dsb looking? what filter media is being used?
    ceramic rings and bio-balls are so efficient they will convert nitrite to nitrate very efficiently
     
  6. dallasg

    dallasg Moderator MASA Contributor

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  7. Mekaeel

    Mekaeel Moderator MASA Contributor

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    High nitrates.....hmmm..... How often have you been feeding your fish, and what foods have you been feeding Pugsly? Any other form of additives that you have been dosing?
    Have you cross checked your Nitrates with another test kit?
     
  8. Pugsly

    Pugsly Thread Starter

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    DSB has little critters running around and seems to be getting black spots near the bottom so that seems to be in operation.

    I use phosphate remover and a nitrate sponge from KENT and a started using activated carbon from brightwell - been in for a week now. Other than that, the Skimmer and dsb I have no other filter media
     
  9. Pugsly

    Pugsly Thread Starter

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    I feed once a week with frozen food (various one) alternate them week after week. And feed sera flakes every other day.

    I dose weekly with sera calcium additive (liquid form) and weekly with sera marinevit. and then I dose with seachem stabilizer when needed.

    surely there must be something other than a dsb that will "consume" the nitrate.
     
  10. Tony

    Tony

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    By the Seachem Stabiliser you mean stability. I just want to clarify as this product is bacteria which is supposed to consume nitrogen and phosphate. What test are you using for the nitrate? What skimmer do you have?
     
  11. Pugsly

    Pugsly Thread Starter

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    Sorry, got confused on that one - it's the buffer and increases PH, forget the name now but it is from seachem. It's a white powder that you add.

    Have the TS2 skimmer and a Boyu skimmer both rated at 700l.
    I use test kits from sera but the few people that tested for me used a bunch of different ones - and all gave the same readings
     
  12. dallasg

    dallasg Moderator MASA Contributor

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    the high nitrate could be from your salt, mix a new batch and test that
     
  13. Tony

    Tony

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    Add some Seachem Stability to reduce your nitrates
     
  14. dallasg

    dallasg Moderator MASA Contributor

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    i run purigen and stability in all my tanks
     
  15. Pugsly

    Pugsly Thread Starter

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    what is 100mg/l nitrate in terms of ppm?

    Will give it a try and see what happens
    thanks for the help so far.
    I take it that this hi nitrate value is the reason why my few corals won't open?
     
  16. dallasg

    dallasg Moderator MASA Contributor

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    yes, high nitrate will affect them,
    its 1 to 1 almost
    100mg/l = 100.1142303ppm
     
  17. Tony

    Tony

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    Mg per litre and parts per million are the same thing as Dallas pointed out. Start with bacteria dosing and get your skimmer to skim a bit wet. Turn the skimmer of for about 4 hours after adding the bacteria so it has time to colonise your tank before the skimmer has time to suck it out. Once the bacteria has settled you can start with vodka dosing at about 0.5ml per 100 litres which you can build up to 1ml per 100 litres over a period of weeks. This is to avoid algal blooms
     
  18. dallasg

    dallasg Moderator MASA Contributor

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    Tony, is that every day to every other day dosing?
     
  19. Tony

    Tony

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    Only when dosing Dallas
     
  20. dallasg

    dallasg Moderator MASA Contributor

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    so if i wanted to start with vodka, do i do it daily?
     
  21. Tony

    Tony

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    The vodka I do daily and add the bacteria once or twice a week when I have chance to turn off the skimmer.
     
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