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Low-tech/excel tank - dosing regime

Discussion in 'Advanced Strategies and Fertilization' started by jerime, Dec 30, 2007.

  1. jerime

    jerime Member

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    Hi,
    Need to know which ferts should I use for a low tech tank - are there any specific compounds that shouldn't be used in a low tech tank? (Diana walstad states in her book that the S derivatives isn't suggested in the low tech etc).

    In a 100 L tank, what s'd be my fert regime?

    Is that any different from an excel low tech tank?

    And last, is a 2 a month water change ok or s'd we still keep it to 1 every 4-6 mths (even though we use excel)?

    Sorry for the multi question - didn't ask for a long time now...:)
     
  2. Tom Barr

    Tom Barr Founder
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    See the "non CO2 method" article.
    Excel is like adding 1/3 CO2, so use CO2 methods, eg water changes and some light ferts.

    Regards,
    Tom Barr
     
  3. geministudios54

    geministudios54 Junior Poster

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    Hi Tom. So even if the recommended amount of excel is dosed, does that mean it's only 1/3 as effective as pressurized C02?
     
  4. VaughnH

    VaughnH Lifetime Charter Member
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    Excel is not as effective a source of carbon as CO2. So, an Excel tank will never have as much carbon available for the plants as a CO2 tank. And, if the carbon isn't available the plants can't use as much of the other nutrients.
     
  5. geministudios54

    geministudios54 Junior Poster

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    Thanx VaughnH. I could never quite verify if the two methods were on par or if excel was the lesser of the two as far as getting CO2 to the plants. But I guess I can see that if a low to medium light tank without pressurized CO2 injection was the goal, excel could be a handy alternative especially on a small tank.
     
  6. Tom Barr

    Tom Barr Founder
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    It's not better/worse etc, it's just slower growth rates, 1/3 as fast as non limiting CO2.

    Regards,
    Tom Barr
     
  7. geministudios54

    geministudios54 Junior Poster

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    Thanks again Tom. That gives me a good indicatiion as to what to expect from excel vs CO2 injection..
     
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