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Thread: Power Head Mods

  1. #1
    Moderator ShipWreck's Avatar
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    Power Head Mods

    I have a couple of Hagen 802 power heads in my tank that work well but the stream of water is pretty hard and narrow. Does anyone know of good mods to held diffuse the flow?

  2. #2
    Moderator Krugar's Avatar
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    You might try making an eductor. They don't look terribly hard to set up.

    I don't have any plans handy, but a google search will likely provide what you need.

    Cheers!
    There is nothing so permanent as a temporary measure.

  3. #3
    Senior Member StephG's Avatar
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    I've seen people cut the tip of their maxijet powerheards to create a wider stream ... maybe that would work out on yours also.

  4. #4
    Moderator ShipWreck's Avatar
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    [i]You might try making an eductor. They don't look terribly hard to set up.
    From what I just read on the web I don't think they will do what I am trying to acheive. They seem to be to increase pressure in the stream and therefore flow length. I am just trying to diffuse the flow.

    StephG, I had considered cutting the nozzle off but wasn't 100% sure if it would be effective and if I do that it would be hard to change back later for a different app.

  5. #5
    Moderator Krugar's Avatar
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    From what I understand an eductor can be used 2 ways. The first way, is to concentrate the pressure & increase it. A fire hose uses an eductor for this.

    But if you slip one over your power head, it sucks more water in the back of the eductor and the lager "out" funnel distributes the same pressure over a much wider area.

    You move more water with the same pressure & therefore decrease the pressure in any one spot.

    Search isn't working for me on Reefcentral, but I seem to recall some decient articles there. If memory serves the basics are just dremelling out some notches on a union that'll fit over top of the powerhead out to create ports for it to draw in more water.

    But I'm not an engineer, there's a good chance I don't understand how they work.

    Cheers!
    There is nothing so permanent as a temporary measure.

  6. #6
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    I know that it works for the maxi jets but not sure about the hagens. If so let us know.

  7. #7
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    I cut them off both a hagen and maxis. works great.

  8. #8
    Moderator ShipWreck's Avatar
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    Originally posted by Johnny Rock
    I cut them off both a hagen and maxis. works great.
    How close to the body did you cut them? Did it create a fan style flow or more of a cone?

  9. #9
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    I cut them right flush to the body, flow was just more open [best I can explain]

  10. #10
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    http://www.kthsales.com/website/vend...g_eductors.htm

    http://themantledmonster.thereeftank.com/ediy.html

    First one explains educators the second one shows how to make 'em

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