Black surface.

Discussion in 'Biological/Natural Filtration and Deep Sand Beds' started by Fishy Steve, 16 Jun 2009.

  1. Fishy Steve

    Fishy Steve Hiden super user

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    I have heard that the bottom area of the Dsb goes black when maturing but my top layer is going black. About one inch thick. Is this normal or should i be doing something about it?
     
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  3. Alan

    Alan Admin MASA Contributor

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    Mine also went black on the top in the begining, i just left it alone and it sorted itself out.
    What sand are you using for your DSB?
     
  4. Afsal

    Afsal

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    alan do u syphon detritus out or do u let the goggas do their thing ???
     
  5. Tony

    Tony

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    Lift some gravel and smell it. If it smells like rotten eggs if sulphur.
     
  6. Alan

    Alan Admin MASA Contributor

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    I let the clean up crew do their thing. The only place i syphon is where i have bare bottom tanks in the system.
     
  7. sihaya

    sihaya

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    Hmm... I might let it go for now, but if it doesn't change in a few weeks, I'd think about gently "mixing" it up with a turkey baster or powerhead. While you never want to "stir" a sand bed, you can "blow" it around a bit...
     
  8. Fishy Steve

    Fishy Steve Thread Starter Hiden super user

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    I am using Playsand that i rinsed like mad. I will leave it for now. Thanks.
     
  9. frankie fish

    frankie fish

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    I only started my dsb now, how long does it take to take shape?
     
  10. Fishy Steve

    Fishy Steve Thread Starter Hiden super user

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    Mine is in its 5th or 6th month and is now crawling with Gogga's in my sump but the one in my display tank seems to be doing the most nitrate reduction. There are loads of bubbles coming out of it and I can see lots and lots of worm tunnels through it.

    To me it seems as though 6 months is a rough estimate on how long it takes a DSB to get going but think it will still mature much further from then on.

    Good luck
    PS Get a cupful of sand from a nearby reefer. It will get things going a bit quicker I think.
     
  11. Kunhardt

    Kunhardt

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    As far as I remember it was 6 months for it to mature.
     
  12. dogstar

    dogstar

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    I reckon my dsb is still not live 10 months on. I have only seeded once when i started my tank up. Since then i have only moved pieces of live rock onto it in an effort to get it live, but i dont think that has worked either.

    So dont go by the 6 months and it will be live thing. Keep an eye on it and try seed it from as many different reefers as possible.
     
  13. Fishy Steve

    Fishy Steve Thread Starter Hiden super user

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    Dogstar is right. It will differ from person to person. I must just be one of the lucky ones as I haven't ever seeded mine with someone else's sand. I just put some live rock on it and it started. About three months when I saw the first bubbles forming in the sand. My live rock is from 4 different sources though so I think I have good diversity.

    10 months is pretty long though to see nothing happening Dogstar. Is something else not going on? What substrate you using?
     
  14. dogstar

    dogstar

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    Yup, i know :( No happy that its not live given that i seeded it, and have been moving different pieces of live rock to it to get it going.

    I am using reggies play sand as subtrate.Its about the reccomended 15cm deep.
     
  15. Fishy Steve

    Fishy Steve Thread Starter Hiden super user

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    Thats exactly what i'm using. How much flow is going over yours? I'm guessing my sump has about 6 or 7 times total turnover. But my in-tank dsb is doing better than my sump dsb which i cant explain. I have insane flow in my tank.
     
  16. FransSny

    FransSny

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    Fishy Steve, I think the flow over your DSB is too high, mine is about 4 times and took about 6 months as well, also using Reggies
     
  17. RiaanP

    RiaanP Moderator

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    I'm using playsand from a garden centre, lot cheaper that Reggies for the same thing.

    My flow is slow. And I got nice big Copepods running around on it. Some Muricidea snails (bad guys for display). Used to have 2 Babelonion Whelks snails there, but I'm afraid the Muricidea's might attack them. Lots of Cheato, pods like to run around in it.
    Seeded from my old tank, and 2 other reefers. And I got 1 sand anemone in it. And a peanut worm. Lots of bristle worms.

    Time to re-seed it. Must re-seed it at least every 6 months.
     
  18. Hermanus

    Hermanus

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    When your DSB starts turning black it is starting to mature, it must preferably be black at the bottom, but can turn black at different places, if it turns black to high your dsb is to thick, then you can take off some sand to keep it to the bottom (the black part) but for know I will let it be and see what it does.

    That is how I understand it @ this stage, might be wrong
     
  19. jean19

    jean19

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    i tought that a dsb could not be to thick (high) ?
     
  20. Hermanus

    Hermanus

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    It is not about to thick as such but rather to try and keep the black to the bottom .When you go to thick the black comes to high or close to the surface and that(black part) is toxic and you don't want a sandstorm or something causing the toxins to be in the water.

    That is how I understand it can be wrong!
     
  21. jean19

    jean19

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    then i'll be better off staying around 12/15 cm deep for my future dsb , it'll be in my tank not as a sump .
     
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