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Carbon & water clarity

Discussion in 'General Plant Topics' started by growitnow, Jan 7, 2008.

  1. growitnow

    growitnow Lifetime Charter Member
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    I am familiar with debates concerning the 'necessity' of carbon in fish only aquariams, and have read many opinions of planted tank folk on the same issue.

    But I do have a straight forward question about carbon in the planted tank, and I guess more generally about carbon and water clarity. I was going to post this on AquariaCentral for a general response, but planted tank folk tend to pay a lot of attention to tank aesthetics. So I'm asking here.

    Assuming reasonable stocking levels and reasonable tank maintenance - would carbon in general be expected to enhance the clarity of tank water?
     
  2. Carissa

    Carissa Guru Class Expert

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    I've only noticed a difference when I've had issues to start with in my tap water or tank, i.e. excessive tannins in the water. Otherwise I can't see any difference.
     
  3. sardesign

    sardesign Junior Poster

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    carbon would increase water clarity but i believe it would strip the water column of nutrients for the plants. i could be wrong so please correct me if so.
     
  4. growitnow

    growitnow Lifetime Charter Member
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    As I recall from prior discussions carbon presence or absence is not a limiting factor in plant nutrient uptake. I believe a small, negligible amount of iron in a particular form or under specific conditions (don't recall) may be removed.

    Re: carbon and water clarity, I have long used it mostly out ouf habit. I am trying to decide whether the cannister space occupied by the carbon I do use (Seachem Matrix) would be better filled for mechanical/floss.
     
  5. Tom Barr

    Tom Barr Founder
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    Folks use carbon and purigen without issues to address clarity etc.
    The only other chemical media is Zeolite for planted tanks folk's might use/need.

    Regards,
    Tom Barr
     
  6. charlie

    charlie Guru Class Expert

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    carbon

    So Tom, what is your take on the nutrient stripping from the water column ?
    is ther any proof it does & to what extent.
     
  7. Tom Barr

    Tom Barr Founder
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    There seems to be talk, but little empericial or observational evidence, eg, little effect on plants.

    I suppose if you had a really lean tank, say a non CO2 tank, and added lots, there might be some negative issues over time.

    That would be the worse case senario and it would take a while.

    Regards,
    Tom Barr
     
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