Sand to fine for DSB

Discussion in 'Biological/Natural Filtration and Deep Sand Beds' started by RenierMartens, 30 May 2016.

  1. RenierMartens

    RenierMartens

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    Hi Guys

    A while ago I had a DSB with sugar size grains and it was doing great. I could see worms growing in it and all. Now I have a very fine sand and it seems like nothing is growing in it(More than 8 months but with the previous sand it was less than a month where I could see stuff growing). Can sand be too fine for a DSB?
     
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  3. RiaanP

    RiaanP Moderator

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    Normally, the finer the sand the better.
    Did you seed the DSB? Just a cup of sand from out of an existing healthy DSB or even some substrate?
     
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    RenierMartens

    RenierMartens

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    Ok maybe i should explain from the start.

    I had the sugar fine dsb and decided to remove a campartment from my sump to make the dsb bigger. So it was 50mm which was not enough after the bigger space. I then went and bought finer sand and topped it up to about 120mm. I mixed it with the old sand. I did however spike my mg to about 1800 to get rid of bryopsis. Could that maybe have killed everything? Previously i could see worms and small snails growing. Now it just looks dirty.
     
  5. RiaanP

    RiaanP Moderator

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    Should have lifted the old sand out, added the new sand and put the old sand on top. But now too late. Next time.

    Seed your DSB. Help it a bit. Lifeforms cannot simply appear. Piece of liverock will help.
     

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