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  1. #1
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    New pond build .. nearly there.

    Some finishing still needed but nearly there.

    IMG_0169.jpg



  2. #2
    Senior Member Rank = Yonsai Goonerharwood's Avatar
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    Looking very nice Dave

    Colin

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  4. #3
    Quote Originally Posted by Davej View Post
    Some finishing still needed but nearly there.

    IMG_0169.jpg
    A few photos of your filter set up wouldn’t go amiss Dave with a detailed description

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  6. #4
    Moderator Rank = Supreme Champion Feline's Avatar
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    It's a fantastic looking pond Dave- smarter than my actual pond and your is 'just' one of your grow-ons

    Must be a great place to sit and drink your beer!
    The new jump guards are looking the business too. Did you get glass or polycarbonate/acrylic sheets for them? (I've ordered some SS balustrade posts but not yet anything to go in them).

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  8. #5
    Senior Member Rank = Supreme Champion freddyboy's Avatar
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    looks the buisness dave. great grow on pond. love it. have another beer you have earned it

  9. #6
    Extreme Koi Member Rank = Rokusai AlanF's Avatar
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    Awesome job Dave, I don't know how you manage to do it all. My money says you will come to love the window....

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  11. #7
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by Feline View Post
    It's a fantastic looking pond Dave- smarter than my actual pond and your is 'just' one of your grow-ons

    Must be a great place to sit and drink your beer!
    The new jump guards are looking the business too. Did you get glass or polycarbonate/acrylic sheets for them? (I've ordered some SS balustrade posts but not yet anything to go in them).
    Hopefully it will give a few of the youngsters a place to grow and I can enjoy watching them in the process.

    I couldn't bring myself to part with loads of cash for SS balustrade posts so knocked some up in hardwood at less than 10% of the cost of SS. I don't intend to run with the front and side guards on a permanent basis but will use them when needed. Went for 10mm Acrylic, black at the rear and clear on the side and front, the span over the window does make things a little wobbly, I could stiffen this piece with some U section but aesthetically this tends to spoil things.

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  13. #8
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by keithatrax View Post
    A few photos of your filter set up wouldn’t go amiss Dave with a detailed description
    The Bio is but a simple chamber Keith. Single 4” baffled inlet and pair of 2” baffled returns.
    2.4m x 1m x 900mm,block built and glassed.
    I had seriously considered Anoxic,, even ordered the catlitter and baskets - but there wasinsufficient evidence to confirm it would deliver, so went with simple fluidK1.
    At a turnover of around once an hour there is a retention inthe chamber of just over 5 minutes which is to my mind ideal efficiency wise.
    Running a cheap and cheerful AEM drum for the mechanical,need to do a few mods to iron out a couple of niggles with it, but that’s notunexpected.

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  15. #9
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Awsome build Dave,looks fantastic and a credit to you.

    I am sure you will enjoy a few Peroni"s watching your Koi in very comfortable suroundings.
    John

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  17. #10
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by AlanF View Post
    Awesome job Dave, I don't know how you manage to do it all. My money says you will come to love the window....
    It was a load of additional hassle and expense Alan, not at all sure that I will ever enjoy looking at koi side on.... but time will tell...

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  19. #11
    Extreme Koi Member Rank = Supreme Champion Andy1671's Avatar
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    I tend to agree with Davej.
    Koi look better seen from above but i do like my window to give a different aspect to my pond.
    Its also easier to see any illness with my koi when they are feeding
    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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  21. #12
    Quote Originally Posted by Davej View Post
    The Bio is but a simple chamber Keith. Single 4” baffled inlet and pair of 2” baffled returns.
    2.4m x 1m x 900mm,block built and glassed.
    I had seriously considered Anoxic,, even ordered the catlitter and baskets - but there wasinsufficient evidence to confirm it would deliver, so went with simple fluidK1.
    At a turnover of around once an hour there is a retention inthe chamber of just over 5 minutes which is to my mind ideal efficiency wise.
    Running a cheap and cheerful AEM drum for the mechanical,need to do a few mods to iron out a couple of niggles with it, but that’s notunexpected.
    Dave, with this being an indoor grow on will you be adding any artificial light?

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  23. #13
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by keithatrax View Post
    Dave, with this being an indoor grow on will you be adding any artificial light?
    Lighting is the current dilemma Keith

    Shed has reasonable "natural" light through the 7mx5m polycarb roof and a couple of windows in one "afternoon sun" wall but do need to sort something.. Really need to have a play as the pond window does tend to become a distraction for the fish when you crank up the lighting over the tank... but may be just a question of them getting accustomed to things. Would prefer running cost wise, to go LED over halides with something in the 6500k range... but ideally dimmable...

    Any suggestions welcomed

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  25. #14
    Extreme Koi Member Rank = Rokusai Rog.G's Avatar
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    Love the new pond Dave, I cannot believe it’s “only a grow on” it puts most peoples ponds to shame.
    Give us some details please, dimensions etc; pump? how much K1? size of air diffuser? skimmer? uv? dechlorinator? heating? auto top up? AEM drum niggles?
    How many Peroni’s consumed during build?
    Such a nice pond to have, especially over the winter period. My pond has covers on already and it’s difficult to get much enjoyment from the hobby during this time.

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  27. #15
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Hi Roger, all very much done on a budget (save for thewindow). I have an “impossible dream” to raise a home bred Showa of reasonable quality to a decent (+80cm) size, the tank is part of that mission.. .. Us koikeepers are mad at times…

    the specs;
    2850mm x 3550mm x 1600mm so a smidge over 3500 Uk gallons. Dense blocks laid on their sides on a 170mm concrete base.

    Glassed over ½” PU foam, save for the window wall that was padded with PU foam out to take the thickness of the window glass.

    Window hole is 2620 x 720mm window is fitted with an overlapof 75mm on each side. 31mm Toughened, laminated and heat soaked glass. On filling there was only a tiny deflection in the top edge, which was a relief.

    Couple of simple drains.

    Heating is by gas, I have a boiler down there so just lashed up a 230,000 HX into the system onto a new zone.

    Bio filter is a simple chamber, drilled sheet plate eitherend with baffles in front of the inletand outlets to try and get as much disruption as possible in the flow. At running height it holds around 450gallons,I have added 150L of mature K1 and 100L of used but dormant K1 at the moment but there is scope to comfortably hold around 1000L.

    Aeration to the chamber is by a couple of 2m diffuser barsrun by a pair of 80L pretty inefficient (but cheap) Charles Austin pumps, with the current K1 in there this keeps it rolling nicely but when I add more I willprobably have to change up to Hiblows.

    I am running two surface returns, a 20,000L pump returns via 2” through the HX, a second10,000L returns back to the pond with minimal restriction, in total these give me an actual flow of pretty close to 20,000L so a turnover through the Bio of around an hour and a retention in thefilter of around 6 minutes which was my target in designing things.

    There are 9 Nisai in there at the moment circa 50cm each, so feed is pretty frugal, around 300gm per day of SH going in at the moment at 23-24C.

    Numbers wise, it is running at Total Ammonia and Nitrite levels of less than 0.05mg/L, which is pleasing.

    Top up wise it gets around 200gallons a day trickle in through activated carbon and a couple of 20 inch BB carbon blocks, I am running without RO at the moment at a pH of 8 but will start to run that down to neutral pH via a 4040 RO unit in the months ahead.

    There is an overflow in the pond that links with the drum waste to help keep the pipework clean.

    On the AEM; Fabricate a new lid, change the probes, rework the seals, replace the spray bar, ideally change things over to run a Logic controller in place of the current control box so it will give greater functionality, (auto flush after 10 minutes if it hasn’t cleaned) low level cutout etc. Not massively expensive fettling, but make things that make life easier and avoid problems.

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  29. #16
    Senior Member Rank = Grand Champion andikoi's Avatar
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    amazing pond dave,i have a solid roof on mine and bought some cheap 10w led floods from jtf,they have daylight leds so 6500k and my koi havent lost any colour since fitted last year,andi

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  31. #17
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by andikoi View Post
    amazing pond dave,i have a solid roof on mine and bought some cheap 10w led floods from jtf,they have daylight leds so 6500k and my koi havent lost any colour since fitted last year,andi
    Thanks Andi, yes a load cheeper to run than a couple of 500 watt halides... The challenge is to get evening lighting right, I am seeking to create the sort of levels you get at dusk.

  32. #18
    Extreme Koi Member Rank = Rokusai Rog.G's Avatar
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    Quote Originally Posted by Davej View Post
    Hi Roger, all very much done on a budget (save for thewindow). I have an “impossible dream” to raise a home bred Showa of reasonable quality to a decent (+80cm) size, the tank is part of that mission.. .. Us koikeepers are mad at times…

    the specs;
    2850mm x 3550mm x 1600mm so a smidge over 3500 Uk gallons. Dense blocks laid on their sides on a 170mm concrete base.

    Glassed over ½” PU foam, save for the window wall that was padded with PU foam out to take the thickness of the window glass.

    Window hole is 2620 x 720mm window is fitted with an overlapof 75mm on each side. 31mm Toughened, laminated and heat soaked glass. On filling there was only a tiny deflection in the top edge, which was a relief.

    Couple of simple drains.

    Heating is by gas, I have a boiler down there so just lashed up a 230,000 HX into the system onto a new zone.

    Bio filter is a simple chamber, drilled sheet plate eitherend with baffles in front of the inletand outlets to try and get as much disruption as possible in the flow. At running height it holds around 450gallons,I have added 150L of mature K1 and 100L of used but dormant K1 at the moment but there is scope to comfortably hold around 1000L.

    Aeration to the chamber is by a couple of 2m diffuser barsrun by a pair of 80L pretty inefficient (but cheap) Charles Austin pumps, with the current K1 in there this keeps it rolling nicely but when I add more I willprobably have to change up to Hiblows.

    I am running two surface returns, a 20,000L pump returns via 2” through the HX, a second10,000L returns back to the pond with minimal restriction, in total these give me an actual flow of pretty close to 20,000L so a turnover through the Bio of around an hour and a retention in thefilter of around 6 minutes which was my target in designing things.

    There are 9 Nisai in there at the moment circa 50cm each, so feed is pretty frugal, around 300gm per day of SH going in at the moment at 23-24C.

    Numbers wise, it is running at Total Ammonia and Nitrite levels of less than 0.05mg/L, which is pleasing.

    Top up wise it gets around 200gallons a day trickle in through activated carbon and a couple of 20 inch BB carbon blocks, I am running without RO at the moment at a pH of 8 but will start to run that down to neutral pH via a 4040 RO unit in the months ahead.

    There is an overflow in the pond that links with the drum waste to help keep the pipework clean.

    On the AEM; Fabricate a new lid, change the probes, rework the seals, replace the spray bar, ideally change things over to run a Logic controller in place of the current control box so it will give greater functionality, (auto flush after 10 minutes if it hasn’t cleaned) low level cutout etc. Not massively expensive fettling, but make things that make life easier and avoid problems.
    Wow thanks for the details Dave, can’t believe what it would have been like if you weren’t on a budget!
    Do you mind me asking why you are changing the probes,seals and spray bar on the AEM.
    By the way we expect you to keep us informed how things are going as you persue your “impossible dream”

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  34. #19
    Quote Originally Posted by Davej View Post
    Lighting is the current dilemma Keith

    Shed has reasonable "natural" light through the 7mx5m polycarb roof and a couple of windows in one "afternoon sun" wall but do need to sort something.. Really need to have a play as the pond window does tend to become a distraction for the fish when you crank up the lighting over the tank... but may be just a question of them getting accustomed to things. Would prefer running cost wise, to go LED over halides with something in the 6500k range... but ideally dimmable...

    Any suggestions welcomed


    Have the same dilemma but not sure what light to go for.
    Was considering trying out something like this one
    https://www.amazon.co.uk/6000-6500K-...00k%2Bled&th=1

  35. #20
    Extreme Koi Member Rank = Supreme Champion Davej's Avatar
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    Quote Originally Posted by Rog.G View Post
    Wow thanks for the details Dave, can’t believe what it would have been like if you weren’t on a budget!
    Do you mind me asking why you are changing the probes,seals and spray bar on the AEM.
    By the way we expect you to keep us informed how things are going as you persue your “impossible dream”
    Lol, system wise it is pretty basic Roger.

    The AEM..

    probe is cheap and cheerful, access is poor to adjust, potentially prone to Biofilm build up.

    Seals on mine leak, they need fettling..

    Spray bar - had a few issues with tips blocking, crazy as they are big bore tips designed for flow.. may be linked to the seal issue but change the bar and put on some quick release spray heads and you don't need a spanner and avoid the risk of compromising the thread on the bar pipe.

    I like it, far superior to the Draco I run on the wildlife pond just needs a few tweaks..

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