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Carbon filtration and dosing ferts

Discussion in 'Aquatic Plant Fertilization' started by jonny_ftm, Nov 22, 2009.

  1. jonny_ftm

    jonny_ftm Guru Class Expert

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    Hi,

    I just put a carbon pad in my canister to clean water from antibiotic and cyanobacteria smell after a BGA treatment

    While I have the carbon pad, will it affect dosing the ferts?

    Many thanks for helping
     
  2. Biollante

    Biollante Lifetime Charter Member
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    No

    Hi Jonny,

    No, not in any meaningful way. :)

    Biollante
     
  3. jonny_ftm

    jonny_ftm Guru Class Expert

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    Thank you, was wandering if I had to add some EI dosing when filtering on carbon.

    Tested NO3 today, and it didn't drop after the carbon was added. Thank you for clarifying it

    Now, how long should I keep that pad of carbon please?
     
  4. Biollante

    Biollante Lifetime Charter Member
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    Three Days

    Hi Jonny,

    When I use carbon it is generally three days to a week.

    Biollante
     
  5. jonny_ftm

    jonny_ftm Guru Class Expert

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    Any risks with filtrating longer on carbon?
     
  6. Biollante

    Biollante Lifetime Charter Member
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    No Significant Risk

    Hi Jonny,

    I am not aware of any significant risks to using activated carbon for greater periods of time. :)

    Over extended periods of time I think there is some risk of reducing certain trace elements. though, I think with our robust EI programs the risk to our plants are negligible. ;)

    Regular water changes negate the need for the charcoal filtration except in dealing with specific situations, such as removing residual medications and off smells.

    Biollante
     
  7. Philosophos

    Philosophos Lifetime Charter Member
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    Depends which trace you use most likely. A lot of the more obscure trace elements aren't in CSM+B, hence the whole flourish supplementing thing. Carbon looses its efficiency after a while anyhow, so unless it's fresh stuff every few days it doesn't seem to do that much.

    I'd use it as necessary for short term stuff, especially if it's with aquasoil; the plants can fall back on what ever trace they can find there.

    -Philosophos
     
  8. jonny_ftm

    jonny_ftm Guru Class Expert

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    Do you intend that CSM+B is not a good replacement for TPN?
     
  9. Philosophos

    Philosophos Lifetime Charter Member
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    The two are about the same:
    http://www.aquarticles.com/articles/plants/Podio_Fertilizer_Comparison_Chart.html

    It's the more obscure traces in the column that I'd be concerned for. Flourish provides these, though I don't really like to pay for constant dosing of it. I throw in a few ml's weekly because I've got a bottle hanging around, and I'm not sure of the finer trace details of my tap water.

    -Philosophos
     
  10. Biollante

    Biollante Lifetime Charter Member
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    Hi Jonny, Philosophos,

    All due respect, CSM+B, in particular with enriched substrates, water changes and feeding fish, pretty much takes care of all your minor and major trace elements.

    I confess I do not run activated charcoal all the time in part because I worry, a little, about stripping minor trace elements. I am aware for instance that activated charcoal is pretty good at removing copper.

    If you are really concerned with the minor trace items mash a daily multi-vitamin tablet an average tablet per hundred gallons once a month. I know some folks like to add a vitamin C tablet as well.

    Biollante
     
  11. jonny_ftm

    jonny_ftm Guru Class Expert

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    Thank you both,

    I orderd recently 3lb of CSM+B. Before using it, I have to finish my stock of TPN
    The activated carbon will be removed after 3-5 days anyway. Just used it after the antibiotic treatment for cyano bacteria and to remove that bad smelling of BGA

    Thank you both
     
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