Regulated Water Flow

Discussion in 'Pumps and Waterflow' started by ted.vanh, 1 Jan 2010.

  1. ted.vanh

    ted.vanh

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    Hi Guys,

    Happy 2010 to you all.
    My tank is 1500mm in length and I have 4 powerheads in the tank generating 24000 lph. These powerheads are situated as follows 1 x 6000lph SunSun double barrel & 1 x 6000 lph Seio on both the left and right hand sides of the tank (which is 700mm wide). These run for 24/7 except for the half hour target feed of corals per day, (and I must add that there are no flow problems).

    I have been toying with the idea of regulating the flow as follows :
    LHS only - +/- one & half hours
    Both LHS & RHS - -ditto-
    RHS only - -ditto-
    Both LHS & RHS - -ditto-
    Repeating the cycle
    Do you guys think that this will be a good idea?
    Any advice will be welcome.
     
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  3. Warr7207

    Warr7207

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  4. viper357

    viper357 Admin MASA Contributor

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    Definitely a good idea to regulate/alternate the flow in the tank.
     
  5. RiaanP

    RiaanP Moderator

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    Low tide to next low tide is about 12 hours.
    So to simulate the incoming and outgoing tides you have to break your cycle up into this 12 hour cycle.
    Highwater for 2 hours, low water for two, and in between the rest of the time.

    That will give you
    Both LHS & RHS - 4 hours - in between tides
    RHS only - 2 hours - "high" tide
    Both LHS & RHS - 4 hours - next in between tides
    LHS only - last 2 hours - "low" tide.

    Then repeating the cycle.
    Can change the high and low tide times, by reducing the in between tides times. But I will keep it all in a 12 hour cycle.

    So starting at midnight, and putting that right in the middle of an between tide setting, then the timers should be set as
    02:00 LHS off - High Tide
    04:00 LHS on - in between
    08:00 RHS off - Low Tide
    10:00 RHS on - in between
    14:00 LHS off - High Tide
    16:00 LHS on - in between
    20:00 RHS off - Low Tide
    22:00 RHS on - in between
     
  6. ted.vanh

    ted.vanh Thread Starter

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    Thanks guys - I have it working since Sunday and all seems to be okay - I also have both sides off for an hour between 17h00 and 18h00 to allow for coral target feeding.
     
  7. Jurgs

    Jurgs

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    Just watch out cause i know when my pumps are off my midas blenny likes to sit in one of them. Maybe just keep that in mind.
     
  8. vatso

    vatso

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    I am trying this as well - got 2 X 500Lh pumps and running them together is just crazy so I run them in 12 Hour cycles - one when the lights are on & when when the lights are off.

    Will give feed back
     
  9. RiaanP

    RiaanP Moderator

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    Just a warning.
    Not all pumps can handle being switched on and off every day. Even if only once per day. Happen to my skimmer pump, used to be on a timer and my skimmer only run during the daytime in reverse to my scrubber.

    On the impeller, the blades part push over the rotor, and there is a little slot where it hooks and then moves with the rotor. that little slot strips and then the blades do not move with the rotor. Have to get a new impeller.

    Also happened on my Koi dam. Where my pump driving the waterfall switched of from 20:00 to next morning 06:00.

    Not saying this can happen to a SunSun pump or all powerheads, as the impeller does look a lot different. More the impellers you get on return pumps and skimmer pumps.
     
  10. Warr7207

    Warr7207

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    I think powerheads should be fine, I ran 6 x seios on a AM wave for over a year. The powerheads probably switched on and off 100 times a day. Never had any problems
     
  11. leslie hempel

    leslie hempel Moderator MASA Contributor

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    all comes down to the pump and its ability to handle the continious on and off.. soft starts on the wavemakers make a huge difference in increasing the pumps lifespan
     
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