Carbon dosing+bacteria with DSB

Discussion in 'Biological/Natural Filtration and Deep Sand Beds' started by Munky82, 6 Jan 2011.

  1. Munky82

    Munky82

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    What is the impact of carbon & bacteria dosing on a DSB ?
    Will the drop in nitrates cause the dsb to crash ? Best to remove the dsb ?
     
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  3. Manic

    Manic Moderator

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    It won't cause a crash. It just won't work. The dsb acts as a nutrient sink where bacteria and carbon dosing removes the nutrients. It won't cause any problems but it just won't be as effective.
     
  4. Munky82

    Munky82 Thread Starter

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    I've currently have a dsb in my display tank and i'm dosing prodibio and vodca. The depth of the dsb is +- 15cm (50% of the tank) and the remainder between 5-10cm.
    Question is am I better off leaving it as is?
     
  5. Munky82

    Munky82 Thread Starter

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    I just can't seem to get my nitrates below 5. Round about 10-15 most of the time.
     
  6. Manic

    Manic Moderator

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    Rather try stability or mb7 as your bacteria strain. I know prodibio is a good product but it takes a long time to show results. How old is the dsb?
     
  7. Munky82

    Munky82 Thread Starter

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    i started with mb7 but wasn't too impressed. dsb age... a year +
     
  8. Manic

    Manic Moderator

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    Then it really won't work. I'm not impressed with mb7 as far as nitrate control goes. Have you tried stability? It is all I use.
     
  9. Bob the (reef)builder

    Bob the (reef)builder

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    What are your PO4 levels?
     
  10. Munky82

    Munky82 Thread Starter

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    To be honest Bob, I've never tested my PO4. I don't have any nuisance algae.
     
  11. Munky82

    Munky82 Thread Starter

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    I haven't tried stability yet. From what i've read stability's giving good results. Am I fighting against my dsb?
     
  12. Monti

    Monti

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    Not quite. Prodibio takes time IF you run a pure prodibio system (ie bioptim, biodigest etc). Such a system is fortnightly dosing, hence it taking quite a while.

    If you run a hybrid of sorts, with daily vodka dosing along with the prodibio bacteria strain, then the process should not be as long (shouldnt be any slower or faster than using some other bac strain really as bac is bac after all- its the carbon dosing that is where the fun lies).

    In fact, I think that the prodibio bac is probably better than seachems and MB7 (from personal experience only- probably has to do with the glass vials= better storage... I reckon in general, one bac product is similar to the next- its the way they are stored that probably matters).

    And to answer the original post, Id either go DSB or Carbon dosing, not both. If you carbon dose with a DSB it will take much longer to see any noticeable results simply because most of what you dose goes and feeds the DSB.
     
    Last edited: 7 Jan 2011
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  13. Slagter

    Slagter MASA Contributor

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    But surely, what you are doing is seeding your DSB as well as your live rock with even more bacteria? Why would you not want the extra bacteria in your DSB? Do the bacteria strains that you add remain in the water column or do they seed the Live rock and the DSB? Isn't this also why you dose the carbon source? To make sure that the bacteria don't just die off, but instead thrive?

    I'm sorry if this is a stupid question, but I'm reading all these conflicting bits of information all over the place now...
     
  14. Munky82

    Munky82 Thread Starter

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    Yeah I agree with you regards to the whole storage thing... my mb7 started to turn milky and thickened slightly even though I did my best not to contaminate it.
    What I don't like about the dsb (besides the 'not getting the nitrates down' thing) is that I'm getting a slight detris buildup. And if I increase the flow to the point where I don't get the buildup, I get sandstorms. And it's just plain ugly :p . The thing is I've got a lot of LR and getting decent flow everywhere without hitting a rock and blowing up substrate is a struggle.
    I take it that siphoning out the dsb and releasing all the gas and shit is detrimental to the health of my system.
     
  15. Sentari

    Sentari

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    I would think that its going to help. It doesnt do bad at all so at the end of the day you will still see a better result. DSB + Carbon Dosing and Bacteria... = Double the Denitrification
     
  16. Munky82

    Munky82 Thread Starter

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    ja... mind you... I'm not in the mood for another cycle.
     
  17. Monti

    Monti

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    It actually wont help. Google the phos to nitrate ratio and why dsbs and carbon dosing dont go together. Surfing on my phone, so cant type the whole logic.
     
  18. Mekaeel

    Mekaeel Moderator MASA Contributor

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    Well put Dave!
     
  19. Monti

    Monti

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    Im not just a hat rack mekaeel
     
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