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  1. #21
    Senior Member Rank = Yonsai Dudley's Avatar
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    Excuse me for adding my 6 pence worth, but John, could you test it out with a lidded bucket with a 4" hole in the bottom. Put your 18000 pump outlet hose through a hole in side of bucket near to the top, lid on tight to stop splashing out, and see if the 4" is adequate to drain. If you have a 4" tank connector and a 90 bend add those and see if it is still ok with a 90 turn.

    I am probably way off here, as I have not really worked with these high flow pumps in this situation.
    I just had a thought, lol. Maybe best not do it, I can see John scrambling across the floor trying to catch a bucket on the end of a loose fire hose and getting soaked in the process. Don't try this at home.

    Steve.

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  3. #22
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Lol fire hose and bucket. Nice one.

    Actually you could be onto something there Steve. He is feeding a shower with that pump which means it will have to pump the water up from say ground level? to say 6ft? where it enters the shower via the spray bar. Now that is going to require a reasonable loss of flow rate due to the head of water it will be pushing so if he runs the pump at something like 70%? he may be close to what he is actually going to be flowing through the shower so may give him an idea as to the size of outlet he requires.

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  5. #23
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Hey Steve open to all opinions and views and well appreciated.
    Good idea and will work,the more I think about it the more I think I will get soaked
    18000 ltrs is a fair old whack to be putting in a bucket and as water is cold at the moment,maybe Frim could come up here to hold the bucket for me while I control the pump
    Think I should leave it and use one 4ins pipe from bottom to bend then through wall to top of pond.
    Thanks for all your help guys and your suggestions much appreciated.
    John

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  7. #24
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Haha nice one John I see you haven't had a sense of humour bypass like I must have had yesterday LOL

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  9. #25
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Quote Originally Posted by john1 View Post
    Thanks for all your help guys and your suggestions much appreciated.
    You're welcome John

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  11. #26
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    HaHa,I was waiting for your reply on that one Frim
    Have a nice evening mate.
    John

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  13. #27
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Quote Originally Posted by john1 View Post
    HaHa,I was waiting for your reply on that one Frim
    Have a nice evening mate.
    Glad I didn't disappoint you there and at least you didn't have to wait long John did you? LOL

    Thanks and you have a good evening too mate.

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  15. #28
    Senior Member Rank = Rokusai Simon Fish's Avatar
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    My initial thought was a single 110mm pipe is plenty.
    Did a bit of digging.

    CalcTool: Gravity-fed pipe flow calculator

    Reckon the 4" would be 3 times what is required, assuming a 10cm slope, play around with the figures they change a lot as the incline changes.

    Only way to be sure is pipe it up and find out.
    Last edited by Simon Fish; 22-02-2019 at 11:17 PM.

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  17. #29
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Simon that is great and I have saved the page,thanks for that.
    John

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  19. #30
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    I looked for something similar to that the other day for you John but kept getting very strange results when I googled flow from a hard 4" pipe

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  21. #31
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Quote Originally Posted by Frimley Koi keeper View Post
    I looked for something similar to that the other day for you John but kept getting very strange results when I googled flow from a hard 4" pipe
    Hey Frim don't be telling Anne about that one.
    John

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  23. #32
    Extreme Koi Member Rank = Adult Champion anne's Avatar
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    You little Monkey John...………….

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  25. #33
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Ha ha Anne I was waiting for you.

    You keeping ok?
    John

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  27. #34
    Extreme Koi Member Rank = Adult Champion anne's Avatar
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    Quote Originally Posted by john1 View Post
    Ha ha Anne I was waiting for you. Where we going John ???? on a magical mystery tour

    You keeping ok?
    Yeah i'm ok john, hope you and yours are all well

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  29. #35
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Both good thanks Anne,did a lot of gardening today so back aching now but enjoying a g&t at the mo,well deserved thats my excuse so I am sticking to it.
    John

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  31. #36
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Quote Originally Posted by john1 View Post
    Hey Frim don't be telling Anne about that one.
    I was surprised at how many fetishes envolve dwarfs

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  33. #37
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Quote Originally Posted by john1 View Post
    Both good thanks Anne,did a lot of gardening today so back aching now but enjoying a g&t at the mo,well deserved thats my excuse so I am sticking to it.
    Probably better than paracetamol John although if you have too many you will need them in the morning lol

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  35. #38
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Even better now after a nice hot shower,did a barby this aft God I stank of smoke.
    John

  36. #39
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Sounds like a day John.

  37. #40
    Senior Member Rank = Rokusai Simon Fish's Avatar
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    Quote Originally Posted by john1 View Post
    Basically pump fed with 18000 ltr variable through shower 4ins tank connecter on bottom 4ins bend through wall to pond.
    Don't want any water settling in the bottom of the shower,mind you there is a grid suspending the media,water going straight out.
    Just a thought with the grid, be sure to have it set an inch or 2 above the outlet so there is nothing restricting the flow.
    If the grid was sitting on top of the 4" connection that could be limiting.

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