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  1. #261
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Looking great MrT, what length and type of hose did you use?
    John

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  3. #262
    Senior Member Rank = Mature Champion smartin's Avatar
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    18.3c losing 0.5 degree's overnight due to nagging wind chill, daytime temps increasing slowly much due to wind chill as easterly wind even in sunshine is cool especially in the shade which my pond is....
    2200 gallons,infinity window,
    Evolve 4k combi,spindrifter,
    2x20k pumps, BD,Skimmer,
    Shower, ASHP

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  5. #263
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    Quote Originally Posted by john1 View Post
    Looking great MrT, what length and type of hose did you use?
    I've got 60m of light duty pond hose. The hose is 18mm/22mm internal and external diameter. And used standard 22mm pipe clips and cable ties to hold it all in place.

    Just hope the type of hose and length I've gone for does the trick. As I can't fit much more in there.

    Sent from my SM-A520F using Tapatalk
    13,000L fibreglassed raised pond with window

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  7. #264
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Should be ok there mine is a similar length but its surprising how much poke you need from the pump,I use a 3000 ltr one.
    John

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  9. #265
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    Right so had my first trial with the heater on the pergola roof today, before I fix it all into place and put the perspex cover on.

    I used a 40watt 3k lph pump that i already had and started out at 37 degrees (water was already in pipe when checked for leaks). It then dropped to 23C at a rate of 1.8lpm. Not bad considering the water temp going into the pump is 14 degrees and it's not even particularly sunny where I am.

    So I've ordered the next pump down which is 2.5k lph, 25watt and still has a head height of 2.5m so should be just enough to get the water up to the heater.

    I'll test that once it arrives.

    I've also found a cheap way to automate it too!

    I'll buy one of these:

    https://www.amazon.co.uk/Inkbird-Tem...inkbird&sr=8-3

    Then I'll run the temperature sensor into the solar heater to monitor the air temp. I'll then plug the water pump into the cooling socket on the thermostat controller and set it to come on once the air temp in the heater gets to say 30 or 40 Celsius. I can always adjust this to get optimum flow v temp balance, or lower it in winter so that it still comes on on relatively sunny days and hey Presto!

    I'll have an automatic solar heater that only operates when it's sunny/warm enough to do so!




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    Last edited by Twhitenosugar; 09-06-2020 at 04:43 PM.
    13,000L fibreglassed raised pond with window

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  11. #266
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    Here it is in situ whilst I trial it out.

    Sent from my SM-A520F using Tapatalk
    13,000L fibreglassed raised pond with window

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  13. #267
    Quote Originally Posted by Twhitenosugar View Post
    Right so had my first trial with the heater on the pergola roof today, before I fix it all into place and put the perspex cover on.

    I used a 40watt 3k lph pump that i already had and started out at 37 degrees (water was already in pipe when checked for leaks). It then dropped to 23C at a rate of 1.8lpm. Not bad considering the water temp going into the pump is 14 degrees and it's not even particularly sunny where I am.

    So I've ordered the next pump down which is 2.5k lph, 25watt and still has a head height of 2.5m so should be just enough to get the water up to the heater.

    I'll test that once it arrives.

    I've also found a cheap way to automate it too!

    I'll buy one of these:

    https://www.amazon.co.uk/Inkbird-Tem...inkbird&sr=8-3

    Then I'll run the temperature sensor into the solar heater to monitor the air temp. I'll then plug the water pump into the cooling socket on the thermostat controller and set it to come on once the air temp in the heater gets to say 30 or 40 Celsius. I can always adjust this to get optimum flow v temp balance, or lower it in winter so that it still comes on on relatively sunny days and hey Presto!

    I'll have an automatic solar heater that only operates when it's sunny/warm enough to do so!




    Sent from my SM-A520F using Tapatalk
    Lol already bought one it works a treat, great minds hey lol

    Sent from my VOG-L29 using Tapatalk

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  15. #268
    Quote Originally Posted by Stuffyrat View Post
    Lol already bought one it works a treat, great minds hey lol

    Sent from my VOG-L29 using Tapatalk
    My pump runs off the heater temperature, so if the water gets too hot it stops pumping, it also has a timer function so it's off over night

    Sent from my VOG-L29 using Tapatalk

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  17. #269
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    Quote Originally Posted by Stuffyrat View Post
    Lol already bought one it works a treat, great minds hey lol

    Sent from my VOG-L29 using Tapatalk
    Indeed!


    Sent from my SM-A520F using Tapatalk
    13,000L fibreglassed raised pond with window

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  19. #270
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    How much hose did you use Mr T ?
    John

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  21. #271
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    I got 2 lengths of 30m in the end - so 60m in total.

    Sent from my SM-A520F using Tapatalk
    13,000L fibreglassed raised pond with window

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  23. #272
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Ok thanks mate, as mine was only temporary thinking of making a more permanent one from irrigation pipe.

    Think I used 70 mtrs on mine cant remember now but it was cheapo hose pipe and to be honest not sure if it is leaching into the pond when very hot.
    John

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  25. #273
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    I did see your post about your fish acting up. Are you sure a rubber hose would really leach something harmful into the water?

    I would've thought the heat would just cause the rubber to degrade/crack quicker, but not actually cause chemicals to be released.

    Tbh one of the reasons I went for pond hose for the solar heater is it's been tried and tested on ponds for years so I thought it should be ok. I just hope it doesn't start tearing/leaking too soon being left exposed to the sunlight all the time. Time will tell.

    Sent from my SM-A520F using Tapatalk
    13,000L fibreglassed raised pond with window

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  27. #274
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    I dont know mate,with what's going on in the pond I am asking myself what have I done different and the heater was one,agree I dont really think it's that but it has to be suspected.
    John

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  29. #275
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Should have said one of the hoses I used I have just found out on reading from Toolstation it says not to be used with hot water,didnt see that previously so I have to suspect it.

    Sorry think it was Srewfix.
    John

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  31. #276
    Extreme Koi Member Rank = Adult Champion anne's Avatar
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    Turn it off John for a few days and see if they pick up wrote on Fred's '' Costia '' thread about that leeching into
    the pond worth a try at least......

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  33. #277
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Already off Anne.
    John

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  35. #278
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    Quote Originally Posted by john1 View Post
    Should have said one of the hoses I used I have just found out on reading from Toolstation it says not to be used with hot water,didnt see that previously so I have to suspect it.

    Sorry think it was Srewfix.
    oops! Hopefully turning it off will sort things for you.

    I've had a few issues with parasites, as well as nps, so know what it's like.

    I just hope the warmer weather returns soon.

    Sent from my SM-A520F using Tapatalk
    13,000L fibreglassed raised pond with window

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  37. #279
    Extreme Koi Member Rank = Adult Champion NickK-UK's Avatar
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    Black HPDE pipe 25mm 50m is about £30. Only concern I'd have is UV stability longer term. HPDE and black carbon: https://www.sciencedirect.com/scienc...14157X19302357 . So as long as the HPDE piping has the black carbon additive - it's about as UV stable as you're going to get. Max temps are 60degC with short spike of 80. So the flow must go!

    This is interesting - it's hinting that you'll get about 10 years max out of the current HPDE black piping against UV: tn-47-pe-resin-testing.pdf
    14000l, my mutts: Chargoi (2010), Doitsu (2022), Tancho (2022), Kujaku (2022), Hi Utusri (2022)

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  39. #280
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    Interesting that about the HDPE pipe. If what I've got rigged up fails, I'll have to give that a go. Pretty cheap for the length that you get.

    I've finally sorted the pipe work, checked for leaks and got the perspex lid on. Looks really neat.

    Next step is to test the lower rated pump with the heater in position to see what flow I get.

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    13,000L fibreglassed raised pond with window

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