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Thread: Pond liner

  1. #1
    Senior Member Rank = Rokusai Steve's koi's Avatar
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    Pond liner

    Trying to work on a budget here peeps, and was wondering what your thoughts are on Greenseal EPDM 0.75mm pond liner.

    Has anyone got it and is it OK. I did look at the 1mm butyl but the price frightened me .



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  3. #2
    Hi,

    I have the 1mm Greenseal on my pond and similarly couldn't justify the step up to butyl, spent the difference on heavy underlay and a few bulk bags of sand to protect the liner.

    Seems good stuff and been in around 8 ish years and looks as good as new so can't recommend enough.

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    Senior Member Rank = Rokusai Steve's koi's Avatar
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    Quote Originally Posted by Mac20 View Post
    Hi,

    I have the 1mm Greenseal on my pond and similarly couldn't justify the step up to butyl, spent the difference on heavy underlay and a few bulk bags of sand to protect the liner.

    Seems good stuff and been in around 8 ish years and looks as good as new so can't recommend enough.
    Thanks for that Mac. Atm i'm looking at the EPDM 1mm, but someone on another forum said. I quote, the 1mm is very difficult to fold neatly because it’s so thick. So wondering now if I should get the 0.75 mm and get a top quality underlay.

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  7. #4
    I dont disagree it is harder to fold but between my old 0.5mm liner and the 1mm greenseal the folds are just slightly longer, still the same location though. Nice weekend of patience and origami on your new build!!!

    Both are good quality and more than enough for the job, just went with 1mm as I have a lot of plants to offer a bit more resistance.

    Good luck on the build, i wouldnt fret too much on the liner just do a thorough job on the underlay and removing any sharps.

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  9. #5
    Should have added, gladly give you a hand with it if you need it as likely fairly close to each other.

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    Senior Member Rank = Rokusai Steve's koi's Avatar
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    Quote Originally Posted by Mac20 View Post
    I dont disagree it is harder to fold but between my old 0.5mm liner and the 1mm greenseal the folds are just slightly longer, still the same location though. Nice weekend of patience and origami on your new build!!!

    Both are good quality and more than enough for the job, just went with 1mm as I have a lot of plants to offer a bit more resistance.

    Good luck on the build, i wouldnt fret too much on the liner just do a thorough job on the underlay and removing any sharps.
    My old liner was pvc so folded easy, it lasted the life of the old pond and still in good condition when I ripped it out. Thanks for the info mate.

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    Quote Originally Posted by Mac20 View Post
    Should have added, gladly give you a hand with it if you need it as likely fairly close to each other.
    I'll PM you.

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    Senior Member Rank = Sansai forever's Avatar
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    If you can go for box weld, lose the folds then... But does depend on your shape

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    Quote Originally Posted by forever View Post
    If you can go for box weld, lose the folds then... But does depend on your shape
    No can do mate, I wished I could, It would have been easier, but the pond is different depths and shapes, It's an old pond I'm redoing.

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    Senior Member Rank = Rokusai Simon Fish's Avatar
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    Another option is 1mm epylan.
    It's not as think as the fire stone even though both classed as 1mm??

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    Quote Originally Posted by Simon Fish View Post
    Another option is 1mm epylan.
    It's not as think as the fire stone even though both classed as 1mm??
    Thanks Simon, I'm still looking, and the more I look the more confused I'm getting .

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    Senior Member Rank = Rokusai Steve's koi's Avatar
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    After I find the liner I want, I'll need underlay, any suggestions, I'm looking for a good one.

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  25. #13
    This is what I managed to pick up:

    250g Heavy duty underlay-

    https://www.swelluk.com/gordon-low-h...erlay-2m-wide/

    Had this liner but in 1mm, here is the alternative in 0.75mm:

    https://www.swelluk.com/gordon-low-g...l-pond-liners/

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    Senior Member Rank = Rokusai Steve's koi's Avatar
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    Quote Originally Posted by Mac20 View Post
    This is what I managed to pick up:

    250g Heavy duty underlay-

    https://www.swelluk.com/gordon-low-h...erlay-2m-wide/

    Had this liner but in 1mm, here is the alternative in 0.75mm:

    https://www.swelluk.com/gordon-low-g...l-pond-liners/
    That underlay don't look bad Mac, I'll bell them tomorrow for the size I want, I need 11 x 8. Cheers mate.

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    Senior Member Rank = Rokusai Steve's koi's Avatar
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    All sorted now, thanks for the help everyone. I went with the Greenseal .75 liner and the heavy duty underlay.
    Delivery is in 2 weeks, so It might be getting a bit late in the year to move the fish into the new pond by the time it's finished. I'll see how the weather holds out.

    Any advise on when to or when not to move my fish will be appreciated as well.

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  31. #16
    What are they in atm Steve?

    If they are in a temp pond and without heating and insulation I would get them over depending on how temps are when you transfer them as likely around late October/November.

    Did my original pond in September and moved my fish in early December as they were quite exposed and had more water over their backs. I had the same filter system and only topped up about 50% in new water so luckily avoided new pond syndrome.

    Loads of products now to ease the transfer which can recommend.

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  33. #17
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    Quote Originally Posted by Mac20 View Post
    What are they in atm Steve?

    If they are in a temp pond and without heating and insulation I would get them over depending on how temps are when you transfer them as likely around late October/November.

    Did my original pond in September and moved my fish in early December as they were quite exposed and had more water over their backs. I had the same filter system and only topped up about 50% in new water so luckily avoided new pond syndrome.

    Loads of products now to ease the transfer which can recommend.
    Atm there in a 10ft swimming pool with about 2ft of water unheated Mac, which is about 1000 Gallon when topped up. The new/old pond is 7ft deep one end and 4ft the other end, and around 7000 Gallon but still unheated. I've never had heat in my pond since I built it 12 year ago. I'll be using the same filter, but adding a bakki and K1 moving bed to the pond from a skimmer. I will probably transfer the water over to the new pond and trickle feed through my big blue dechlorinator until full. Just hoping the fish will be OK over winter.

  34. #18
    Hi Steve,

    Personally would get them in as soon as possible to give them some shelter in the main pond, if we have a hard winter they would be quite exposed but you could of course insulate the outer wall of the temporary pond and cover it.

    If you get your liner in the next couple of weeks, they could be in for November so a bit of a result for them! Even if copings and finishing the pond wait till spring.

    Whenever you move them I would strongly recommend using Stress coat (not for the chlorine but found the Aloe did help mend any knocks) then also using Cloverleaf absolute pearls - quality product that helps the filters out no end, pop two in once a week and haven't had ammonia or nitrites recorded for the last two years and put this down to this product.

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  36. #19
    Senior Member Rank = Rokusai Steve's koi's Avatar
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    Thanks for that Mac, I'll have a butchers at them products and get them ordered mate.

    The sand to blind the pond is being delivered Friday, once that's done I'll get the sleepers fitted, shouldn't take to long I've only got 50 lol.

  37. #20
    Senior Member Rank = Hassai Wain's Avatar
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    Quote Originally Posted by Steve's koi View Post
    Thanks for that Mac, I'll have a butchers at them products and get them ordered mate.

    The sand to blind the pond is being delivered Friday, once that's done I'll get the sleepers fitted, shouldn't take to long I've only got 50 lol.

    Hahahaha wont if MAC calls round

    you kno what they say

    a task shared is a ..................pain in the $%$%^^% for the mate lol
    1000 gal
    2 x Hozelock 6000ltr 9W UV
    Allpond Spin Filter 8000 11W UV
    Blagdon pond oxy 640 ltr/hr

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