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  1. #1
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Heated pond top up system

    Just thinking if it's possible to make a winter proof pond top up system?

    What I'm thinking is if I sit a 210 litre blue barrel in the garage with an immersion heater jacket on it with a 500 or 600 watt aquarium heater in it then run a pipe from it, round the outside of the hose to the pond, if it was heated to say 20 C would that be warm enough to stop the water from freezing up between the barrel and the pond even if the pipe wasn't insulated if we get any sub zero temperatures? It's quite a long run at maybe 15 to 20m or possibly a bit more.

    The other option would be sit the barrel in the shed so it's a shorter run to the pond but the water feeding it wouldn't be heated.

    I did see someone on here run a water pipe with the internal style grey insulation on it through a length of something like 1.5" or 2" ? waste or pressure pipe so maybe do something similar for the feed out to the barrel and then out to the pond?

    Was going to put a float valve to control the water coming into the barrel and then another on the pond to keep the water levels at the right heights.

    I'm guessing the better or the more the pipework is insulated the lower temperature I'd need to heat to to stop anything from freezing. I'm not trying to heat the pond just the water used to top it up when required.

    Any suggestions on this?


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  2. #2
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    i'd have a think about using a 600w aquarium heater...
    i've just used 2 x 400w to heat my QT pond and they ain't cheap...

    a 600w aquarium heater if on 24/7 will cost about 150 a month!

    best thing to do with water pipes is to insulate/bury and keep them trickling in freezing weather,
    they only generally freeze if turned completely off as the mains water even in winter is usually 3C-5C...

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  4. #3
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Knew you'd have some good advice on this Dave

    Just thought with using something like a 500 or 600 watt heater in a 210 litre water butt would heat it quickly but not need to be running 24/7 if it was well insulated because it would be thermostatically controlled?
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    All we ever wanted was everything,
    All we ever got was cold,
    Get up, eat jelly, sandwich bars and barbed wire,
    Squash every week into a day.

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  6. #4
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    Quote Originally Posted by Frimley Koi keeper View Post
    Knew you'd have some good advice on this Dave

    Just thought with using something like a 500 or 600 watt heater in a 210 litre water butt would heat it quickly but not need to be running 24/7 if it was well insulated because it would be thermostatically controlled?
    it would want to be extremely well insulated, and would still freeze if turned off...

    or another method that would work 100% is trace heating.
    you run a low wattage trace heating cable inside the insulation and it keeps the water from freezing.
    sure as a sparky you've fitted them before?

    https://www.amazon.co.uk/Danfoss-Tra...3&sr=8-17&th=1




    https://www.amazon.co.uk/Danfoss-Tra...3&sr=8-17&th=1
    Last edited by davethefish1; 01-10-2023 at 07:55 PM.

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  8. #5
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    I've seen trace heating but not fitted it for over 20 years.

    Worth a look though as there's a twin outside socket on the back of the house now so could leave it plugged into that or a spare socket on the pond electrics
    ________________________________________________
    All we ever wanted was everything,
    All we ever got was cold,
    Get up, eat jelly, sandwich bars and barbed wire,
    Squash every week into a day.

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  10. #6
    Senior Member Rank = Jussai Alburglar's Avatar
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    To keep my ibc tank from freezing I put a thermostat plug socket in a weather proof box and set that to 4.5 degrees with a 300w aquarium heater. Worked a treat. Page 7 on my build has full details.
    https://www.koiforum.uk/pond-constru...ow-pond-7.html





    "MH2000 Microcomputer Temperature Controller". Was 5 on eBay IIRC
    Last edited by Alburglar; 02-10-2023 at 01:10 AM.
    Kikusui, Beni Kikokuryu, Hariwake, Sanke, Yotsujiro, Doitsu Aka Bekko, Purachina & Mukashi Ogon.

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  12. #7
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Nice one. I've got some of those boxes but in grey. Amazon has them on a deal every now and again but with a 4 way lead with a 10m lead on them.
    ________________________________________________
    All we ever wanted was everything,
    All we ever got was cold,
    Get up, eat jelly, sandwich bars and barbed wire,
    Squash every week into a day.

 

 

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