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Question on brown sps in low po4 system

Discussion in 'Zeovit® System' started by aquareef123, Jun 17, 2015.

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  1. aquareef123

    aquareef123
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    Blotched Anthias

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    Why my sps brown even when my hanna phosphorus meter is showing less than 0.03ppm and salifert no3 test kit is showing nitrate undetectable?

    As and when i dose zeospurr2 the color become lighter and more vibrant for a few days and go back to normal.

    This shows that my corals have excess zooxanthellae. But if that is the case why it is not showing up in my po4 and no3 reading?

    Thanks.



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  2. James72

    James72
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    Clarion Angelfish

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    There are many other nutrients that we do not measure. Have you checked your potassium is 400ppm. ?

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  3. andtsg

    andtsg
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    Princess Anthias

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    I always believe "high nutrient high light, low nutrient low light". How big and deep is ur tank and what light u using bro?
     
  4. aquareef123

    aquareef123
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    James, my potassium is around 400. I even dose fm color elements.

    Andtsg, my tank is shallow 20in. I use 8x80w ati t5 running at 6 in above water. Any nearer i see sps going bleached. So my tank is either bleached coral or brown coral. Lolx

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  5. andtsg

    andtsg
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    Princess Anthias

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    Bro, any way of reducing ur light? Brown sps is the zoox produce too much energy liao.... eat too much...
     
  6. aquareef123

    aquareef123
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    Reduce light will reduce brown sps? This is the first time i hear. Is this true?

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  7. andtsg

    andtsg
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    Princess Anthias

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    _-" u already got brownies in ur tank... what harm trying...


    Google sps low nutrient low light, high nutrient high light to understand the logic ah... too long for me to type out here...
     
  8. Hideaki

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    Regal Angel

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    Cos u are colour blind?
    Lolololol
     
  9. aquareef123

    aquareef123
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  10. Sherman

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    Gem Tang

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    Brown usually is not even light. You brown sps is it under shade or is it near the water surface?
    You running your light at peak all the time or u running a ramp up and down with peak over a few hours a day?
    Like to post a picture of your tank setup for better understanding
     
  11. Jude

    Jude
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    Platinum Clownfish

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    How long is your system at Zero nitrate and phosphate?
     
  12. aquareef123

    aquareef123
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    A few months. I won't say zero nitrate and phosphate. The reading from Hanna shows less than 0.03ppm for po4 and salifert undetectable for no3.
     
  13. Jude

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    I was thinking that it will take some time for the colors to show. Mainly as the SPS used up its remaining energy (which was absorb from the water previously), it will then be force to use the energy from the light. The colors should show by then.
    A few months seems to be sufficient for some results to show.
     
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  14. aquareef123

    aquareef123
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    That sounds like a logical explanation.

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  15. youdontknowme

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    I have a super brown stag, that is already 4months in my tank now. Only about 2month ago the color is then slowly improving, showing blue/purple.
    All along my nutrient is :
    No3 undetectable
    Po4 0.049ppm
     
  16. aquareef123

    aquareef123
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    Ydkm, how can your tank have brown stag? Dont make my toe laugh lah. Hahaha. All your coral all swee swee one.

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  17. aquareef123

    aquareef123
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    For me it seem to take months if not year to color up sps. All it take is one day and the sps can turn to brown. Really depressing

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  18. youdontknowme

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    Its a gift from a buddy heheh.
    Colored to brown is fast&easy.
    But brown to color is slow&hard.
     
  19. James72

    James72
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    Clarion Angelfish

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    That's the beauty and reason why we keep sps isn't it? If it's too easy everyone will be bored.

    I have many sps that I grew from brown to full coloured and the satisfaction you get from it money cant buy. With a discipline approach, you will get there eventually.

    Example of my valida Feb 2014 vs current.

    [​IMG]

    [​IMG]
     
    #19 James72, Jun 20, 2015
    Last edited: Jun 20, 2015
  20. Tofubox

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    "A general word about browning of corals. The colour brown is created via the zooxanthellae algae. This is their natural colour. Contrary to popular belief, they are not the colourant of the corals, rather they mask the pigments of the corals. Whether this is a sunscrean or simply a reaction to available nutrients on the part of the coral is unclear. On a reef, the corals are able to control their zooxanthellate populations via nutrient limitation, thus controling their general metabolism and their colour. In an aquarium, corals are generally exposed to too many available nutrients disolved in the water. As the zooxanthellae can simply absorb these disolved nutrients straight from the water column, instead of the coral controlling the process, they have a population explosion. This is what we see as browning-out of a coral. An overpopulation of zooxanthellae in the coral's tissues.


    Essentially, if we are able to keep the basic nutrients, such as PO4 and NO3, as a close to NSW level, the corals are able to once again take control of their metabolism and the zooxanthellate population is limited by the coral. What we often forget is that there are other nutrients that the algae can use and we are dosing these nutrients in a perfect form to brown-out the corals. Amino acids, vitamin complexes, marine snow, etc. are all nutrients that will brown corals, if they are present in too high a quantity.

    When faced with browning corals, one needs to assess the complete picture and understand from where these nutrients are coming. Low PO4 and NO3 levels are fine, but bring little, if we over supplement with other nutrient-rich products. A case of less is more.

    Therefore, if your corals are turning brown, and your PO4 is 0.02 and the NO3 <2ppm, then there is another nutrient source in play. Cut your dosing of AAs, etc. in half and give it a few weeks to see how the corals react. You certainly won't starve them, but you may start to starve out the zooxanthellae and thus see the corals true colours."
     
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