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  1. #1

    Pond construction/membrane

    my Pond developed a leak around a month ago, fish transferred into a temporary prefab and removed the existing pond (another prefab put in by the previous owners of our house).

    I have purchased a liner and membrane to go under it, decided that ide make the pond bigger while Iím at it, spent 16 hours hand digging (made longer by the fact every spade ful I hit a brick/glass/stone - I think Iíve found whatís caused the original leak).

    Iíve got it to a point where Iím happy with the size and depth.

    Iíve removed as many bricks, stones etc. As I can find.

    My original plan was an inch of sand then membrane then liner.

    My only concern is that anything Iíve missed will protrude through when the weight of the water is on top and the sand/ soil shifts a little.

    I was thinking of getting some cheep carpet tiles and laying them, then a cm of sand then membrane and liner.

    To me it makes sense to use carpet tiles as theyíre cheep, can often get them free when someoneís removed, theyíre made of 100% plastic and therefore wonít rot, and theyíre going to be strong enough to not let anything peirce through (hopefully)

    Anybody used this approach? Whatís your thoughts? I know people use chew carpet, my thought is this is just a more robust way of doing it.



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  3. #2
    Can’t see why it wouldn’t work to be honest. Alternatively a lot more hands and knees times removing stones and more sand?

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  5. #3
    Senior Member Rank = Yonsai davethefish1's Avatar
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    i feel your pain...
    what passes for 'soil' in my garden is more like industrial waste.
    the ground is full of stones, glass, brick bats, even broken concrete pillars with rebar sticking out!...i kid you not.

    after making the bottom and sides as brick and glass free as i could
    i lined my pond with an inch of sand in the bottom,
    then 4 overlapping layers of plastic foil insulation that's quite tough that i got from amazon.
    then 350gsm underlay, then the liner.
    the carpet tiles can't hurt either though... anything to help prevent a sharp object poking through...

    Pond construction/membrane-20190712_145216-jpg




    Pond construction/membrane-20190712_144806-jpg


    Pond construction/membrane-20190725_082433-jpg
    Attached Images Attached Images
    You don't have to be a pipefitter to keep koi...
    but it helps...

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  7. #4
    Extreme Koi Member Rank = Supreme Champion Andy1671's Avatar
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    All the gardens in my area are the same level and to my surprise i found a concrete path 4 foot down.
    It was about 10" thick and took a battering from a sledge hammer and i won
    5000 Gallon Fibreglassed Pond With 54" x 27" Infinity Window
    BD300 Drum Filter
    Artesian 0.5hp - Aquadyne 4.4c Beadfilter - PS4 Protein Shower
    Badu Eco Touch - EP20 UV Sterilizer - ASHP - Venturi
    Hi Blo 60 - Medo 45 - Spindrifter Bottom Drain
    Wide Mouthed Skimmer

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  9. #5
    Extreme Koi Member Rank = Supreme Champion Andy1671's Avatar
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    Oh and a Marmite Jar about 5 foot down
    5000 Gallon Fibreglassed Pond With 54" x 27" Infinity Window
    BD300 Drum Filter
    Artesian 0.5hp - Aquadyne 4.4c Beadfilter - PS4 Protein Shower
    Badu Eco Touch - EP20 UV Sterilizer - ASHP - Venturi
    Hi Blo 60 - Medo 45 - Spindrifter Bottom Drain
    Wide Mouthed Skimmer

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  11. #6
    Bet you didnít expect that Andy


    Yep, donít want to have anymore dig time, Iíve hit a clay layer (riddeled with rocks glass metal and other waste) and with the weather thereís about an inch of water at the bottom so itís a bit of a pain.

    Will give the carpet tiles a go as I should be able to pick some up FOC second hand on eBay or something where someoneís removing them from their office/kitchen.

    Hopefully have everything in on my day off Wednesday.

    Then I just have to dispose of the 4cubic metres or so of crap Iíve dug up.

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  13. #7
    Extreme Koi Member Rank = Supreme Champion Andy1671's Avatar
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    Especially as the jar was intact, not even a chip in the glass
    5000 Gallon Fibreglassed Pond With 54" x 27" Infinity Window
    BD300 Drum Filter
    Artesian 0.5hp - Aquadyne 4.4c Beadfilter - PS4 Protein Shower
    Badu Eco Touch - EP20 UV Sterilizer - ASHP - Venturi
    Hi Blo 60 - Medo 45 - Spindrifter Bottom Drain
    Wide Mouthed Skimmer

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  15. #8
    Got the tiles down today, followed by a few inches of sand, the membranes then the liner.
    Pond 70%filled. Going to leave it for a few days to let the sides fully settle etc then fill the remaining 30% and get fish transferred over.

    Then I just need to dispose of the few tonne Iíve dug out and lay a new pavement.

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  17. #9
    Took me 7 years to get rid of all my soil by the ďColditzĒ method while walking the dog. Couple of pocketfuls every day Pond construction/membranePond construction/membrane

    Sorry, I think I may have posted that rubbish joke before


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  19. #10
    Senior Member Rank = Grand Champion Ajm's Avatar
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    I always say there nothing like a good joke... and that wasnt anything like a good joke

    Sent from my F5121 using Tapatalk
    Johnathan

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  21. #11
    Lol...how about this one


    My wife is obsessed with taking photos of herself while having a hot shower.

    I think she may have selfie steam issues.

    Kaboooom


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  23. #12
    Senior Member Rank = Grand Champion Ajm's Avatar
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    Hahaha mint. Give ya that one like

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    Johnathan

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  25. #13
    Senior Member Rank = Supreme Champion freddyboy's Avatar
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    Quote Originally Posted by bigcarpchaser View Post
    Took me 7 years to get rid of all my soil by the ďColditzĒ method while walking the dog. Couple of pocketfuls every day Pond construction/membranePond construction/membrane

    Sorry, I think I may have posted that rubbish joke before


    Sent from my iPhone using Tapatalk
    HahaPond construction/membranePond construction/membranePond construction/membranePond construction/membrane

    Sent from my SM-G960F using Tapatalk

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