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Filtration/Water Flow for non CO2

Discussion in 'Non-CO2 Methods' started by PapstBenediktXVI, Mar 18, 2012.

  1. PapstBenediktXVI

    PapstBenediktXVI Subscriber

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    Hello there,

    i hope this question hasnt been asked too often, though i really did google the topic and couldnt find any conclusive answers for non-co2 tanks.

    so i'm currently thinking about moving out and instead of thinking about furniture and coloring the walls im pondering about the new tank im gonna set up :pride:

    So anyway I'm thinking planted, no co2 and currently i'm thinking about which filter i'm going to use.

    So before i found this site I considered just a simple powerhead with a quick filter (which is harder to obtain in europe than youd think it is) and the tank volume being cycled about 1.5 times per hour which is actually the recommended perfomance of filters on most german websites. everything above is considered murder for both plants and fish.
    also DW does reccomend low filtration (since the plants do a better job at water filtraion leaving no NO3) and slow (though not too slow) current.

    so on most english websites i read that the turnover should be about 5-10 (or something like that) times the volume of the tank.

    Now my questions are; does this kind of current (meaning x5-10) apply to any kind of non-co2 kind of tank too? or is that only reccomendable for co2 injected tanks?

    Also what kind of filter can be used for non-co2 tanks? is a powerhead w/ quickfilter cool? or will there be debris/mulm buildup especially in non-co2 tanks w/ sand (since the mulm doesnt get down to the soil).
    I did think about external filters too though the idea of leaking and the filter pumping out all the water does scare me:bi_polo:

    Anyways excuse me if my questions or ideas for non co2 tanks are foolish, there is absolutely no information about non co2 methods on german sites and only unfriendly people in the forums so i had to piece everything together myself til now.

    Cheers,
    Papst

    btw, im gonna stock the tank with light-medium fishload (im over the overstocking-beginner's phase)
    also if there is any important variables missing please tell me i will try and answer as precise as i can
     
    #1 PapstBenediktXVI, Mar 18, 2012
    Last edited by a moderator: Mar 18, 2012
  2. dutchy

    dutchy Plant Guru Team
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    I think that for a non CO2 tank high flow is of less importance, as there is no CO2 that has to be dispersed and we need absolute high O2 levels to accomodate high CO2 levels. Also a lot of flow will lower natural present CO2.

    Still it is important, as to keep the boundary layer over leaves moving, that way enabeling the plants to uptake the nutrients through the leaves and provide enough O2 during the night.

    A good filter should do the trick, still I'd go for around five times turnover and keep a mild surface movement. That means a 200 liter tank would need a filter with around 1000 liters pump capacity.
     
    #2 dutchy, Mar 18, 2012
    Last edited by a moderator: Mar 18, 2012
  3. PapstBenediktXVI

    PapstBenediktXVI Subscriber

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    hello there,

    5 times it is then
    it's strange how there is such a huge difference between the reccomended perfomance of filters in germany and the us and a.

    is there any special kind of reccomendable filter for a non co2 setup?
    or: does anybody have good/bad experiences with powerheads or external filters or anything alike?

    btw: thanks for the quick reply :D


    cheers
    papst
     
  4. Aquaticz

    Aquaticz New Member

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    Personal preference..I use eheim canister filters. I use a power head in a med light tank + eheim filter.
    I think you want the leaves to sway gently - no hurricanes ;-)
    I use a Eheim 2217 in a 40 & a 55 gal
     
  5. PapstBenediktXVI

    PapstBenediktXVI Subscriber

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    Hello there,

    wow this is a pretty huge filter for those tanks
    so i guess over filtration wont be an issue in a non co2 tank
    thanks for the reply :)

    cheers
    papst
     
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