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  1. #81
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Yeah exactly that but then it comes to the costs of buying the media what is not cheap if weíre talking 1000L and also the amount of air your going to need to turn it over..

    From my perspective itís all been thoroughly worked out.


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  3. #82
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    the only thing i would add regarding quoted K1 filter ratios which are all based on EA's use of K1 in a nexus.

    there is more to a biological filter than just ammonia and nitrite processing.
    if that were the case as soon as you had cycled a filter a pond would be fully mature.

    the biofilm is a living eco system in it's self,
    with many different types of bacteria and microscopic life living with, and off each other.
    that takes years to fully mature

    so imo you can't have too big a filter...
    even if the pond was 10,000 litres and the filters were 100,000 litres with 50,000 litres of K1

    and yes, the pic below isn't the pond.... it's the bio chamber






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  5. #83
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    Blimey that's a bit much. Having a window on a bio filter lol.

    Sent from my Pixel 4a (5G) using Tapatalk
    13,000L fibreglassed raised pond with window

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  7. #84
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    Quote Originally Posted by Twhitenosugar View Post
    Blimey that's a bit much. Having a window on a bio filter lol.

    Sent from my Pixel 4a (5G) using Tapatalk
    i dunno..
    in my case the window worked out cheaper than the sleepers would have...

    i'm trying to remember where i got that pic from, but the pond was a hell of a size too i think....

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  9. #85
    Senior Member Rank = Jussai Alburglar's Avatar
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    I've seen a few large monster aquarium tanks with windows into the moving bed. It's quite mesmerizing watching it turn over constantly.
    Kikusui, Beni Kikokuryu, Hariwake, Sanke, Yotsujiro, Doitsu Aka Bekko, Purachina & Mukashi Ogon.

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  11. #86
    Senior Member Rank = Jussai Alburglar's Avatar
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    https://youtu.be/VS1HuwKYtYw

    Apologies for the blokes voice.
    Last edited by Alburglar; 22-03-2023 at 06:59 PM.
    Kikusui, Beni Kikokuryu, Hariwake, Sanke, Yotsujiro, Doitsu Aka Bekko, Purachina & Mukashi Ogon.

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  13. #87
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Quote Originally Posted by davethefish1 View Post


    Agree with that Dave,

    Ha that photo is a guy called Lee it was a 2k gallon grow on he converted it to a bio for his 7k gallon pond..


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  15. #88
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    Quote Originally Posted by Mikeh83 View Post
    Agree with that Dave,

    Ha that photo is a guy called Lee it was a 2k gallon grow on he converted it to a bio for his 7k gallon pond..


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    I need a pond extension! His bio chamber is the size of my pond ! Jesus !!

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    Freddyboy the legend

    "we are water keepers first"

    Johnathan

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  17. #89
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    If anyone sees any good deals on moving bed media let me know Mikes new pond build


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  19. #90
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    sorry to spam your build thread mate
    but just saw this video of that 2000 gallon bio on lee hadfields channel at 18:49 in with 1500 litres of K1 in it!


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  21. #91
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Wow, some set up.
    John

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  23. #92
    Senior Member Rank = Jussai Alburglar's Avatar
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    Quote Originally Posted by Mikeh83 View Post
    If anyone sees any good deals on moving bed media let me know Mikes new pond build


    Sent from my iPhone using Tapatalk
    Have a look at the old 'similar to k1' media thread. Look for the k1 alternative that was very good .
    https://www.koiforum.uk/water-treatm...urglar+similar

    Check out the cheap versions on ebay. Look for the one with the centre piece.
    Under the microscope it was certainly equivalent to K1', maybe better due to added surface area of centre section. Other alternatives were shite.
    Last edited by Alburglar; 28-03-2023 at 10:55 AM.
    Kikusui, Beni Kikokuryu, Hariwake, Sanke, Yotsujiro, Doitsu Aka Bekko, Purachina & Mukashi Ogon.

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  25. #93
    Senior Member Rank = Jussai Alburglar's Avatar
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    Here's some pretending to be K1, which inadvertently looks like the good cheaper version.
    https://www.ebay.co.uk/itm/175664419...mis&media=COPY
    Kikusui, Beni Kikokuryu, Hariwake, Sanke, Yotsujiro, Doitsu Aka Bekko, Purachina & Mukashi Ogon.

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  27. #94
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
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    You can buy it really cheaply from ali express, but the minimum quantities are quite high from memory.

    I would say the K+ is better than normal K1.

    Micro K1 will offer even more surface area for the same volume, butnot easy to find.
    Last edited by RS2OOO; 28-03-2023 at 04:07 PM.

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  29. #95
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Mikes new pond build

    Thanks for suggestions, I think I will end up just adding my matured media

    50L k1,
    25L hel x 13
    30L oase pond pads

    Then will Chuck another 100L k1+

    Iíll likely then add a 50L bag each time I add a new koi.


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    Last edited by Mikeh83; 28-03-2023 at 03:44 PM.

  30. #96
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    When Sam p got some k+ was talking to a dealer about it . And price per surface area the k1 came out best bit more money but lots more surface

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    Freddyboy the legend

    "we are water keepers first"

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  32. #97
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    If bio space is limited pond pads are imo far superior for surface area


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  34. #98
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    Quote Originally Posted by Mikeh83 View Post
    If bio space is limited pond pads are imo far superior for surface area


    Sent from my iPhone using Tapatalk
    Did look at adding a few liters to my nexus . Think i spoke to you about that last time this subject came up

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    Freddyboy the legend

    "we are water keepers first"

    Johnathan

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  36. #99
    Senior Member Rank = Adult Champion Mikeh83's Avatar
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    Managed to make a start to the moving bed chamber, I have decided that I am going to pump from drum to chamber and then gravity return at water level after a few chats.

    Still a few bits to work out but making progress gain what feels good





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  38. #100
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
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    If gravity returning from bio to pond remember the bio chamber water level will be slightly higher than the pond.

    My old anoxic section had 2x 2" tank connectors at water surface level and above 6k lph the anoxic section ran about 1" higher than the pond. At 20k lph it would overflow as the 2x 2" outlets were simply not adequate for gravity feeding at that level of flow.

    That chamber would make a fantastic fry rearing facility

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