Aquaculture skimming advice needed

Discussion in 'Protein Skimmers, Mechanical Filtration' started by leslie hempel, 2 Dec 2010.

  1. leslie hempel

    leslie hempel Moderator MASA Contributor

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    Guys i have been pulled int something here which does not make sence to me and perhaps someone is more apt to put me in thye picture

    One of the fish farms down here has asked me to assist them in Suggesting protein skimmers that will service 160000lt systems with a load of 40kg per 1 m3

    The skimmer must be able to remove a solids content of between 6-10mg per lt,

    In my discussions with them i have repeatedly been told that they want to push 160000lt of water through the skimmer per hour. i have cautioned them that by any standards this will not allow enough contact time for the water to be properly skimmed unless the skimmer is huge and can take that kind of through put and still retain the bubbles for 2 minutes or so.

    what im needing is to size the skimmer correctly for the intended load.

    My thought was to suggest 2 units that can service 80000lt each to get to the 160000lt total capacity (aquaculture units).

    Any advice from the guru's? I think i have looked at this so often i am missing the obvious?

    help will be appreciated

    les
     
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  3. 459b

    459b Moderator MASA Contributor

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    is it a totally recirc farm?
     
  4. leslie hempel

    leslie hempel Thread Starter Moderator MASA Contributor

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    10% of the water is makeup.
     
  5. Mauritius-aquarist

    Mauritius-aquarist

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    In my opinion, u can go wit two 80 000Ltr rated skimmer.

    U talked about contact time which is def very important for such huge skimmers.
    For me nothing come close than Schurans huge skimmers. I think u'll get ur answers with the link below.

    | Skimmer |
    They are definitely awesome skimmers..........but consequently expensive.
    The
    Aquaflotor® AQ800 complete with its pump can easily go for 25 000euro.

    good luck leslie.....
     
    Last edited: 2 Dec 2010
  6. Alan

    Alan Admin MASA Contributor

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    Yowza Les, skimmers this size cost big bucks, hope they have the budget. I would suggest self cleaning cups aswell as cups on these puppies could be almost bath tub size. I cant remember the skimmers they have at Ushaka but they did work very well although they ran them too wet.
     
  7. Alan

    Alan Admin MASA Contributor

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  8. Adee

    Adee

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    Best bet would be for them to phone some of our big aquariums in SA.

    out of interest what are they cultivating?
     
  9. Manic

    Manic Moderator

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    Personally I think they are wasting time with skimmers, it is going to cost way too much. There are better ways of doing it and way cheaper.
     
  10. 459b

    459b Moderator MASA Contributor

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    what ways would you suggest?
     
  11. Manic

    Manic Moderator

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    Natural filtration methods. Don't really want to elaborate because the method is private and I know another reefer that is looking at pursuing this method. If he wants to share then he can, don't want to give his ideas away. Is this for marine or fresh water.
     
  12. 459b

    459b Moderator MASA Contributor

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    Natural filtration for a large scale aquaculture facility? I have seen many natural methods attempted on small scale before and all have had serious issues. When it comes to the bioload of farms, you need something reliable and predictable like a monster skimmer.
    But would be interested to hear what this new method is.
     
  13. leslie hempel

    leslie hempel Thread Starter Moderator MASA Contributor

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    skimming is the heartbeat in a recuirc system where farming is involved

    but the skimmer isnt the problem, its the age old scenario of correctly specifying what size etc etc is applicable.

    i have a very nice skimmer in mind for this application and its the first of its kind applying all of the features we use but in a larger more effiecient unit.

    i think im going to suggest 2 units (each rated to 80000lt ea) be used, each recieving 80 cubes per hour and that will give me a maximum recuirc time of 1 minute each and meet their requirement of 160 cubes being serviced.

    2 units will allow a better safety net should 1 unit become faulty and need repair. the second could hold the fort untill the spares arrive.
     
  14. MistaOrange

    MistaOrange

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  15. leslie hempel

    leslie hempel Thread Starter Moderator MASA Contributor

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    here are pictures of the units suggested

    [​IMG]
    [​IMG]
    [​IMG]

    and thats only the 24000lt unit
     
  16. leslie hempel

    leslie hempel Thread Starter Moderator MASA Contributor

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    [​IMG]
    [​IMG]
     
  17. poiromaniax

    poiromaniax MASA Contributor

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    Looks like SKIMZ Turbomagnum range.

    PLEASE get them to get these (then I can maybe have a hope of seeing them in action :lol: )
     
  18. Mauritius-aquarist

    Mauritius-aquarist

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    Skimmers looking good Leslie.....
    Wat brand are these skimmers??
    Is it DIY???

    They look like H&S skimmers.......
     
  19. robvdv

    robvdv

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    There's a local company that does large skimmers for aquaculture: Introduction to Deep Blue

    The other guy to speak to is Dr Niall Vine. He's designed large trickle filters for fish farms. PM me if you want his email address.

    Also consider mechanical filtration and trickle filters as complementary methods.
     
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