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Thread: Best biological filter media?

  1. #1
    Join Date
    Oct 2012
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    Default Best biological filter media?

    Hello everyone,

    I'm in the process of buying a fluval fx5 and some media for it. I already have about 1kg of fluval biomax but I'm sure the filter will hold more than that. So I was wondering if there are some types of biological media that are better than others? For example the fluval biomax was pretty cheap, is it just as good as some more expensive media such as eheim substrat pro or seachem matrix/purigen?

    Other media that will be going in there include a fine filter pad, water polishing pad, small bag of carbon and the biomax.

  2. #2

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    I have only used the Eheim Substrat and Seachem Matrix. I think they are both good, but have heard Sera Siporax is even better.

    Be careful with fine filter pads in the FX5, they tend to get clogged very quickly and reduce the flow rate.

  3. #3
    Join Date
    Nov 2010
    Location
    St Lucia, Brisbane
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    Default

    Eheim sub all the way
    aLan

  4. #4
    Join Date
    Oct 2012
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    Elizabeth, South Australia
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    Default

    Nylon pot scrubbers.

  5. #5

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    Quote Originally Posted by Nova 8 View Post
    Nylon pot scrubbers.
    Ok for mechanical filtration, not ideal for biological filtration.

  6. #6
    Join Date
    Mar 2011
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    Brisbane - Southside
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    Default

    Some filter media has more surface area than others. Some have better flow through, Some have better mechanical. However, you can't get better than 0 ammonia and 0 nitrite biologically. On large filters like FX5 I use pkain ordinsry gravel. Just work out what is important for you.

  7. #7
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    Oct 2012
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    Elizabeth, South Australia
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    Quote Originally Posted by pleco4me View Post
    Ok for mechanical filtration, not ideal for biological filtration.
    Brilliant for biological, actually never heard of them being used for mechanical. They have more surface area per cm2 then most other forms of media and are cheaper generally too.

  8. #8
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    Lane Cove, Sydney, NSW
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    +1 for Seachem Matrix.

    To quote the manufacturers "Each liter of Matrix™ provides as much surface (>~700 m2) as 170 liters of plastic balls!"

    I think that is far superior to pot scrubbers.

  9. #9
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    Glenreagh, NSW
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    I use seachem matrix. No problems, couldn't say anything bad about it.
    Joe.

  10. #10
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    Oct 2012
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    Default

    Thanks for that guys. I will probably go with matrix then.

    I've also heard about the pads getting clogged easily. If that happens what could I replace them with? Filter floss?

  11. #11
    Join Date
    Dec 2006
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    Qld, Brisbane
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    One day I'm going to do some experiments....to find out where the bacteria actually live in aquaria
    I have several tanks with no biological media....just air stones....some without even airstones!

    I believe significant amount of bacteria in tanks aren't actually located in the filter....

  12. #12
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    Jun 2009
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    Sydney, NSW
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    Marine Pure is what I would recommend, the thick plates are the only the media to do de-nitrification. I personally use the large spheres, have done for ages and would never go back to matrix or the eheim media

  13. #13
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    Quote Originally Posted by Nova 8 View Post
    Brilliant for biological, actually never heard of them being used for mechanical. They have more surface area per cm2 then most other forms of media and are cheaper generally too.
    Care to show us some evidence of this?
    Whatever

  14. #14
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    Here is a list of different materials used in filters. http://www.monsterfishkeepers.com/fo...o-Filter-Media

    . ...Leigh

  15. #15
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    Quote Originally Posted by Nova 8 View Post
    Nylon pot scrubbers.
    They are ok if you don't have a heavy Bio load, I couldn't use them now as I have a very heavy bio load on my tank, but I use too a long time ago and they did good.

    . ...Leigh

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