Directional flow

Discussion in 'Beginner Discussions' started by vis, 15 Sep 2009.

  1. vis

    vis

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    do you think directional flow works better than Luminar/random and why ?
     
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  3. jacquesb

    jacquesb Retired Moderator

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    Hi Vis - firstly - I have not welcomed you to MASA yet. So - a VERY WARM WELCOME! Great to have you on-board!

    To answer your question:
    We are trying to simulate the sea/oceans/reefs in a tiny little glass box in our homes.
    To simulate the sea, you need to try and "simulate" the environment which the fish and corals live in, as well.
    Meaning - we need to try and simulate the water movement as closely as we can.

    First prize, is having turbulent water (random) flow, but WITH a surge added to that. The surge (to-and-fro movement of the sea), is the most difficult to achieve - it can be done though, by using some really fancy Tunze equipment.

    But, the random water flow is not that difficult to achieve - this is 2nd prize.

    You do NOT get laminar/straigh/jet-like water flow in the sea, anywhere. You have huge amounts of water that moves together, and move often than none, you have cross-sections of "streams" that "crash" into each other, forming this huge random, turbulent and chaotic water movement.....
    This happens MOST over shallow reefs....

    Do you SCUBA dive Vis? Have you ever seen a real reef environment?
     
  4. FransSny

    FransSny

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    As JB said.....the ocean doesnt flow one way
     
  5. crispin

    crispin

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    you definatley want random chaotic flow. the changing patterns allow the detritus to remain in the water collum for longer and thus go over the overflow to be skimmed. Most of the better reefs ive seen use timers and or controllers to regulate pumps to create chaotic random flow.

    id say good quality flow is far more important than too much flow.
     
  6. Tony

    Tony

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    Random chaotic is the way to go especially if you want SPS corals. You don't want them growing in one direction
     
  7. vis

    vis Thread Starter

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    directional flow has been working for me for the last year or more, as the water bounces from the glass and rocks it does create a non directional flow, i do agree with the ocean does not move in one direction, yes i have scuba before, but you also get current dives, where the current mainly flow in one direction.

    just interesting how other people run their systems, if you look at my photos that i posted on the new guy post , i have bi-directional flow but most of my softy's move in alot of diffrent directions as well as grow in diffrent directions.
     
  8. FransSny

    FransSny

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    This makes in non linear flow .......come to my house so i can draw a pic
     
  9. Prodigy

    Prodigy

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    Well put Jac!!!
     
  10. crispin

    crispin

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    lol agreed, vis does sound like he has non linear flow :)

    i would also add that the reason we use slightly different pumps for internal flow than found in Fresh water is that the marine pumps trend to push a greater collum of water at a time, its a far wider distribution opposed to the concerntrated jet of water as found in fresh water.

    this helps greatly in achieving random flow throughout a tank.
     
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