Catappa-x and Purigen

Discussion in 'Water Chemistry' started by David Cherry, 6 Oct 2019.

  1. David Cherry

    David Cherry Member

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    I put some Purigen in my external filter to strip tannins from my water when I started up my tank. I'm now wanting to add Easy-life Catappa-x, will I need to remove the Purigen from my filter?
     
  2. Siege

    Siege Member

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    Nice and easy - yes you will.

    The purigen will polish the water, defeating the purpose of adding the tannins! :)
     
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  3. David Cherry

    David Cherry Member

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    Many thanks
     
  4. dw1305

    dw1305 Expert

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    Hi all,
    You could try Oak leaves, they do the same job as Catappa leaves and are very widely available as free PYO. Have a look at <"All the leaves are brown">.

    cheers Darrel
     
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  5. David Cherry

    David Cherry Member

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    I was wanting the benefits of the leaves without colouring the water, though thanks for the suggestion and that was a very interesting article.
     
  6. dw1305

    dw1305 Expert

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    Hi all,
    You can't fully get that, it is the coloured humic and tannic compounds that have both the health benefits and cause the colouring. <"Prof. Christian Steinberg"> is the <"lead academic researcher"> in this area.

    Have a look at <"The Tint blog">. The author (Scott Fellman) isn't a neutral observer (<"Tannin Aquatics"> is his company), but it is an interesting read.

    cheers Darrel
     
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