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  1. #1

    Pond pergola wood stain

    I am building a pergola over my pond. Can anyone advise on an aqua safe wood stain that I can use please?



  2. #2
    Member Rank = Sansai pfrosty's Avatar
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    Quote Originally Posted by Unitedgeorge View Post
    I am building a pergola over my pond. Can anyone advise on an aqua safe wood stain that I can use please?
    I would advise using pressure treated tanelised wood
    No need to stain / tteat

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  4. #3
    Hi. Thanks for the speedy reply. The wood is tanelised but is light green and I would like it a darker stain in keeping with other wooden features around the pond.

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    Senior Member Rank = Kyusai hippo's Avatar
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    I just used a regular decking oil by Liberon around my pond . Never had a problem with it . Are there treatments that can be dangerous - even when dry ?

    The lack of responses to the post is making me wonder if anyone has experienced any problems . I`m sure many of us will have used various treatments ??
    Colin

    2500 Gallon Fibreglass Pond
    Draco Solum 16 , 400l Bio Chamber

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  8. #5
    Thanks hippo. I've reviewed 2 products one being Ronseal Total Wood Preserver but when you read the instructions and cautions both say unsafe for aquatic use and can be very harmful to livestock.
    I'm just concerned when wet from rain if any leeching occurs from the brams over the water.
    I'll read up about the Liberon product anyway.
    Thanks

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  10. #6
    Extreme Koi Member Rank = Nisai harryc's Avatar
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    Any water based stain will be fine as long as it is dry and doesn’t fall into the pond water.

    if you are really worried then paint/stain the timber first then erect your pergola.

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  12. #7
    Thanks Harryc. Yes I definitely will be staining before erecting. I will check out water based stains. Many thanks

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  14. #8
    Speaking of issues with treatments, I remember one koi dealer telling me a story of a pond with a tanelised pergola not covered. The koi over time become unwell and nothing could be found wrong with usual water quality tests or on scrape. Eventually they came to thinking that it might be rainwater dripping from tannelised wood and the wood was removed. This solved the problem. Not conclusive but do bear in mind toxins leaching from such wood may also cause issues. I use such wood but all under a polycarbonate roof.

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  16. #9
    Yes thats what concerns me imc28. I will apply 3 coats of stain on top of the tanelised wood but unsure this would still be safe.
    I have seen many mature koi ponds though with wooden pergolas over them
    Does anyone in the forum have what I am planning or maybe know someone who does and if so any issues or recommendations for me?

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  18. #10
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    There have been a few threads in the past about what to use. Maybe try a search.

    From memory, many people (me included) used Curinol Ducksback and it seems fine. The water beads well on it, suggesting it's unlikely to transfer the paint into the pond.

    Sent from my SM-A520F using Tapatalk
    13,000L fibreglassed raised pond with window

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  20. #11
    Many thanks for the recommendation Gosai

  21. #12
    I honestly do not know of true impacts of either treated tanelised wood or treated otherwise. Why not cover with polycarbonate to be on safe side?

  22. #13
    OK Many thanks however polycarbonate is a no as I want the pond and surroundings as natural as possible.

  23. #14
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    What I would avoid using is cheap external wood/fence paint from a company called Barratine (or something like that). I got some from Toolstation as it was cheap.

    I put it on the wooden frame on my winter covers and I could see where condensation was dripping off it, there was paint in the droplets. God knows what paint dripping into the pond was doing to the fish.

    And this was weeks after I had painted them so they had plenty of time to dry out before use.

    But since I repainted them with ducks back - no problems.

    Sent from my SM-A520F using Tapatalk
    13,000L fibreglassed raised pond with window

  24. #15
    Yep definitely. Sounds like ducks back is the correct product. Thanks

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  26. #16
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    I used Cuprinol Ducks back on mine.
    Human life is truly a short affair. It is better to live doing the things that you like Inazo Nitobe

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  28. #17
    Yes many thanks for this. You are the 3rd to recommend this product so ducksback it is.

  29. #18
    I used Sadolin on mine years ago, and would go oil over waterbased all day long if you want it to last. It costs more but will last longer.


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