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  1. #1

    Sleepers for pond construction

    Hello and firstly apologies if this is in the wrong section, mods feed free to move.

    I currently have a small prefab pond which was put in by previous owners. I’m looking to remove this, level out the hole that it leaves so that it will be an area roughly 2 foot below grade. I am then looking to build a sleeper wall around 600mm above grade, some foam matting on the inside and then a pond liner.

    Aiming for pond size of roughly 2m(L) x 1.5m(W) x 1.5m(D), should be roughly 5000ltrs.

    Which will suffice for my ten koi that the previous owners crammed into the 1000ltr pond their currently in.

    Anybody got suggestions of where to buy sleepers from other than the usuals b&q, wickes, travis Perkins etc.

    Thanks
    Paul



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  3. #2
    Senior Member Rank = Jussai Alburglar's Avatar
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    Thats too small for 10 koi. Thats 4500litres which is less than 1000gallons and the rule of thumb is 1000gallons per adult fish.
    People do stretch that by running large filter systems but that is probably a stretch to far.? Hopefully someone more experienced can chime in.

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  5. #3
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    Quote Originally Posted by Alburglar View Post
    Thats too small for 10 koi. Thats 4500litres which is less than 1000gallons and the rule of thumb is 1000gallons per adult fish.
    People do stretch that by running large filter systems but that is probably a stretch to far.? Hopefully someone more experienced can chime in.
    1000 gal per fish . Is that liters not gals

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  7. #4
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Hi Paul and welcome.
    You are asking where to buy sleepers under the presumption that your calculations of pond size is enough.
    Dont want to sound rude but it wont be big enough.
    For ten koi you should be looking at a minimum of 2500 -3000 gals as they grow fast.
    Please dont be offended as that is not my intention just friendly advice mate.
    John

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    Senior Member Rank = Jussai Alburglar's Avatar
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    Quote Originally Posted by Ajm View Post
    1000 gal per fish . Is that liters not gals

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    Yeah sorry. 1 inch of fish per 10 gal so 100inch for 1000gal so 4 adults for 1000gal?

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  11. #6
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Easy mistake Al.
    John

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  13. #7
    Sorry. Was half asleep typing my post. I should have said ten fish.
    There is two koi, a few comet “gold fish”, a few fantails and two that I am yet to nail down exactly what they are.

    As for the size, those are initial dimensions. No doubt as I build it will increase.

    I’m going to put decking in around it so there’s plenty of space.

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  15. #8
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    That's fine mate,but I would build as big as you can as you can easily regret it on the future.
    John

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    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    We still havnt answered your question, if buying anything I would shop around as prices can vary so much.
    Dont know much about sleepers but think they are around £20 each.
    John

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    Senior Member Rank = Supreme Champion Ajm's Avatar
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    Sure rs will pop up soon he did a very nice sleeper pond and may be able to advise better also andikoi

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    Senior Member Rank = Jussai Alburglar's Avatar
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    ... The cheapest i found locally was 14 quid, softwood, treated at around 2.4m long. Plus delivery which i hadn't enquired about.

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  23. #12
    Any idea where you got them from. Best I’ve found so far is £17 plus postage.

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  25. #13
    Senior Member Rank = Grand Champion andikoi's Avatar
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    google "railway sleepers near me" and find a local wood yard,mine were £17 each,spent £1500 just on sleepers lol,,,,andi

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  27. #14
    Senior Member Rank = Jussai Tom Koi's Avatar
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    Quote Originally Posted by john1 View Post
    We still havnt answered your question, if buying anything I would shop around as prices can vary so much.
    Dont know much about sleepers but think they are around £20 each.
    B&M Bargains sell them for just over 12quid in their garden centre section, think dimension's are around 1200mm x 200mm x 100mm per sleeper.

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    Senior Member Rank = Grand Champion andikoi's Avatar
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    that works out at £24 per 2.4m tom, thats expensive,whereabouts are you in country paul,someone close may be able to help you,,,,,andi

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  31. #16
    Sorry. I’m based in Darlington. Co Durham, north east.

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    Senior Member Rank = Grand Champion andikoi's Avatar
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    https://www.westwoodtimber.co.uk/index.htm on your doorstep lol,i spent ages looking for best price,and ended up at a timber yard,just worked out a price if i bought more and haggled,,,,andi

  34. #18
    Thanks andi.

    They’ve quoted the same price as elsewhere, but for four extra sleepers meaning I can get the pond size a little bigger.

  35. #19
    Senior Member Rank = Grand Champion andikoi's Avatar
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    sometimes its better to just bite the bullet lol,i got mine with free delivery as i bought so many so actually saved £70,only problem being there hiab 18T broke down and they sent on 2 flatbed transits so all 96 had to be handballed off lol,,,,andi
    Attached Images Attached Images

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  37. #20
    Next question. What’s the best way to secure the sleepers. I was thinking of buying some 1m rebar.

    When I lay a foundation for the sleepers to sit on, cast the rebar into the foundation. Then drill a 25mm hole in the sleeper and slot over the rebar, filling any gap with some form of resin. Two at each side, one at each short length. Then simply using sleeper screws in the corners, or possibly another rebar as that won’t be seen.

 

 
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