Submersible pump

Discussion in 'Pumps and Waterflow' started by OCELLARIS, 3 Sep 2008.

  1. OCELLARIS

    OCELLARIS

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    hi guys...

    a submersible pump basically has an intake of water and outputs it
    to what ever destination you require, so could you use a submersible pump
    as a power head in the sense of creating water flow in your tank
    and maybe even direct it towards your corals ???????
     
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  3. jacquesb

    jacquesb Retired Moderator

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    Hi Occelaris - YES. BUT no. That's not what you want.

    The reason for suggesting that you rather use a power-head like a SEIO, ReSun Wavemaker, Boyu Waver or Tunze, is that these power-heads actually deliver a HUGE WATER FLOW by dispersing the water it pushes out, into a HUGE wavelike stream under water, and NOT concentrating the water in one place, like a jet-stream.

    Corals do not like direct linear water flow. They prefer indirect strong water currents that is extremely chaotic and turbulent. Meaning that the water movement around them should be a huge body/amount of water that moves together, and not only a small diameter jet-stream of water that blows directly towards them.....

    I hope that you understand....
     
  4. OCELLARIS

    OCELLARIS Thread Starter

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    100% understand, i get what you mean as a wave maker is move one that pushes the water flow with an interval inbetween the flow where as the submersible pump has a continuos flow at one spot, its like if you had a submersible pump with a switch that would be turned on and off consistently to creat a wave flow.
     
  5. jacquesb

    jacquesb Retired Moderator

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    Occelaris - the ReSun Wavemaker and the Boyu Wavers come with a timing circuit. This circuit constantly switches between 3 modes of pumping strength, ie. 2 "Speeds" at which the pumps run at.
    The ReSun, has the following settings: 15000 litres per hour, 8000 litres per hour, and 2400 litres per hour. BUT - the ReSun also has a propeller and not an impeller (big difference) which is 67mm in diameter - the pumps you are talking about originally, only have impellers with a maximum blade diameter of +-35 to 40mm (the BIGGEST of the internal/underwater pumps/powerheads with impellers..... BUT, their outlets are a LOT smaller... The ReSun's for example has an outlet of +-55/60mm.... this means that the water is immediately dispersed very widely.

    The switching of the ReSun power-heads' power, theoretically creates "waves" (not really in practice). BUT - this does indeed help with making the water flow chaotic and random/turbulent!

    The same way that the SEIO and the Tunze's controllers work..... they also have these cycles where they switch pumps on and off to create "random" and chaotic/turbulent flow.....

    We are trying to achieve something similar to what's happening on a real reef in the sea.....
     
  6. OCELLARIS

    OCELLARIS Thread Starter

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    :) thanx jacques, so could the next best thing be a powerhead
     
  7. jacquesb

    jacquesb Retired Moderator

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    Yes - the "next best thing" could be a power-head/submersible pump.... (to a compared to a SEIO/ReSun/Boyu/Tunze).....
    If you should decide to go for a "normal" submersible pump, then make sure that you don't point the water flow directly at the life-stock - rather point it towards the glass panels of the tank, that the water flow then deflect off the glass panels of the tank.....
     
  8. OCELLARIS

    OCELLARIS Thread Starter

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    good point jacques,were just thinking of keepinf water flow in your tank so you dont
    get dead spots in your tank for algae to grow
     
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