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Thread: bakki shower or nexus filter

  1. #1
    Tosai
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    bakki shower or nexus filter

    With your opinon, which is better a 3,500 gallon koi pond, no plants, 4 inch bottom drain with air diffuser. Case 1 is water gravity fed to vortex filter than to a pump which pumps it to a bakki shower, or vortex filter to a pump which pumps it to a nexus filter. Their are so many different types of filters now, and sometimes i just don't know which ones are ideal for different situations. thanks

  2. #2
    Oyagoi Flounder's Avatar
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    Is the pond outdoor? Will you shut it down in the winter or keep it running?

  3. #3
    Daihonmei PapaBear's Avatar
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    Quote Originally Posted by Flounder View Post
    Is the pond outdoor? Will you shut it down in the winter or keep it running?
    Great questions Answer them and most of the decision is probably made

  4. #4
    Honmei KoiCop's Avatar
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    Both! Run the Nexus on the bottom drain circuit and the Bakki on the skimmer circuit.

    Best wishes,

  5. #5
    Oyagoi Ethan25's Avatar
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    I would say, it depends on your location and whether you are planning on shutting down during winter. Seeing New Jersey, I'd go with the Nexus unless you can maintain a consistent winter temperature even with a shower. But if that shower is subject to the elements (cold temps), you would be smart to have a secondary filter system, if not a whole other one year round altogether.

  6. #6
    eds
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    Sansai
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    I'm planning a pond over here in the UK that will run all year with a shower fed from a skimmer and seive as the only filtration. I'm just going to enclose the shower and other filtration in it's own little shed by the pond to prevent it chilling the water and make it easy to clean the seive.

    There are quite a few guys over here who run a shower outside all year; they just enclose it in polycarbonate for the autumn/winter/spring.

    If you want to go with a K1 filter (and you have the option) I'd probably convert vortex chambers to run K1 in rather than buy a nexus - first vortex you speak about could have a DIY Easy fitted into it to deal with all the fines and heavier waste and then you could have one or two vortexes afterwards filled with fluidised K1 to deal with the biological side. Why not buy a Nexus instead? Well I think they are a lot of money for what they are and they also have quite a bit hidden and tricky to get to, whereas the converted vortexes are usually much more open and easier to get to the bits when you have to! Just my opinion though!

  7. #7
    Tosai
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    Yeah i am in NJ, the filter would be shut done for a few months in winter and just have the air pump going.

    EDS
    how easy is it to make the vortex filter into a nexus. any specific brand vortex you like the best.

  8. #8
    eds
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    Sansai
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    Quote Originally Posted by glupo View Post
    how easy is it to make the vortex filter into a nexus. any specific brand vortex you like the best.
    Best thing is to show you a guide Maurice Cox did and is on his website.
    Jap matting to Kaldness media

    This is another way M. has converted some. Mechanical filtration capable of removing fines
    He still has ones like those permanent ones at the bottom running as mechanical filtration at the farm coping with very high stocking rates. (Bio is handled by Bakki Showers).
    As long as you have a screen on the inlet, outlet and waste pipes then they will work great.

    If you just want to put a container into the vortex rather than convert it all then I reckon this is the best kind of idea, Simply Koi and More Koi • View topic - K1 Conversion - update
    Then you just have the air ring on the bottom of the smaller container. Waste will still settle out in the base of the vortex as normal and the 4" pipe running across just slots into the exit fitting from the vortex so you can remove the whole thing in one go if you need to get access to the vortex chamber below. You also don't then need a grid on the waste pipe as all the K1 is kept in the container.

    No ideas on brands I'm afraid though.

  9. #9
    MCA
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    Oyagoi MCA's Avatar
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    BOTH!!!!!!!!!!!!!!!!!!!!!

    For our pond each BD has a Nexus/EAzy that run 24/7. For all but the 3 coldest months I run the skimmer to two short bakki showers. I bypass the showers January to sometime in March.

  10. #10
    Oyagoi Lam Nguyen's Avatar
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    Very open ended question that requires more information. As Flounder has mentioned, will the pond be covered or outdoors? As we all know NJ can be purty darn cold in the winter time. Other things to consider:

    1. Is money a factor?
    2. What are your goals with the hobby?
    3. What quality koi will you be stocking?
    4. Is koi size/growth important to you?
    5. What is your proposed koi stocking density?
    6. I assuming you will be using K1 for the Nexus. What about shower media? Which type of media will you be using?
    7. Is the pond near trees? If so, then will you be installing a skimmer circuit?
    8. Will you be installing a heater?

    IMO, showers are the best type of filtration if you can keep the temp constant. If cooling may be a factor, then you can't go wrong with a K1 fluidized bed. Just make sure that you have a good mechanical filter before it and it should work dandy. Or, better yet, you can be like MCA and have both a shower and a fluidized bed. However, this would be an overkill for a 3.5K gal pond.....have you considered making the pond bigger?

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