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what to do with overflow?


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  1. #1
    TekCat
    Guest

    Default what to do with overflow?

    I have a Quietflow 600 hang on overflow box... supposedly it should take
    care of 600GPh. Also I have pump that is pumping from sump to the tank, it
    is Dolphin DP 560. With 2' head loss the chart says it would output 460GPH.
    So far so good, but the overflow doesn't seem to take 460gph quite well, I
    get my sump's return area empty very quickly, this means one thing that the
    pump pumps faster than overflow can handle. Any thoughts on how to solve
    this?

  2. #2
    harmanrk - Reefkeeper CR Member
    Join Date
    Sep 2005
    Location
    Lansing MI
    Posts
    253

    Default re:what to do with overflow?

    #ed_op#DIV#ed_cl#Place a Tee on the return line, and run a line back to the sump, place a ball valve on this deversion line, and open it slightly to devert some of the return ware back to the sump. It should be possible to find apoint where the pump and the overflow match up.#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#Robert#ed_op#/DIV#ed_cl#

  3. #3
    Charles Spitzer
    Guest

    Default Re: what to do with overflow?

    "TekCat" <tek_catNOBS@hotmail.com> wrote in message
    news:digutj$ea9$1@domitilla.aioe.org...
    I have a Quietflow 600 hang on overflow box... supposedly it should take
    care of 600GPh. Also I have pump that is pumping from sump to the tank,
    it
    is Dolphin DP 560. With 2' head loss the chart says it would output
    460GPH.
    So far so good, but the overflow doesn't seem to take 460gph quite well, I
    get my sump's return area empty very quickly, this means one thing that
    the
    pump pumps faster than overflow can handle. Any thoughts on how to solve
    this?
    throttle the output side of the pump, or get another/bigger overflow.

  4. #4
    Wayne Sallee
    Guest

    Default Re: what to do with overflow?

    Get a biger sump, and/or improve your overflow.

    Your water level in the sump will drop when the pump is
    running, and go back up when the pump is not. Does the
    tank come close to overflowing, or does the tank water
    level run at a normal level?

    Wayne Sallee
    Wayne@WayneSallee.com

    Charles Spitzer wrote:
    "TekCat" <tek_catNOBS@hotmail.com> wrote in message
    news:digutj$ea9$1@domitilla.aioe.org...

    I have a Quietflow 600 hang on overflow box... supposedly it should take
    care of 600GPh. Also I have pump that is pumping from sump to the tank,
    it
    is Dolphin DP 560. With 2' head loss the chart says it would output
    460GPH.
    So far so good, but the overflow doesn't seem to take 460gph quite well, I
    get my sump's return area empty very quickly, this means one thing that
    the
    pump pumps faster than overflow can handle. Any thoughts on how to solve
    this?


    throttle the output side of the pump, or get another/bigger overflow.

  5. #5
    Wayne Sallee
    Guest

    Default Re: what to do with overflow?

    How many gallons of fluctuation are you getting between
    pump on, and pump off?
    What's the size of your tank?

    Wayne Sallee
    Wayne@WayneSallee.com

    TekCat wrote:
    the return area of the sump is only 3 gallons, so it gets "dry" fast. I
    could try to make bigger sump, or ... maybe making new teeth in overflow
    skimming box could do the trick?



    "Wayne Sallee" <Wayne@WayneSallee.com> wrote in message
    news:ctU2f.13282$QE1.5418@newsread2.news.atl.earth link.net...

    Get a biger sump, and/or improve your overflow.

    Your water level in the sump will drop when the pump is running, and go
    back up when the pump is not. Does the tank come close to overflowing, or
    does the tank water level run at a normal level?

    Wayne Sallee
    Wayne@WayneSallee.com

    Charles Spitzer wrote:

    "TekCat" <tek_catNOBS@hotmail.com> wrote in message
    news:digutj$ea9$1@domitilla.aioe.org...


    I have a Quietflow 600 hang on overflow box... supposedly it should take
    care of 600GPh. Also I have pump that is pumping from sump to the tank,
    it
    is Dolphin DP 560. With 2' head loss the chart says it would output
    460GPH.
    So far so good, but the overflow doesn't seem to take 460gph quite well,
    I
    get my sump's return area empty very quickly, this means one thing that
    the
    pump pumps faster than overflow can handle. Any thoughts on how to solve
    this?


    throttle the output side of the pump, or get another/bigger overflow.


  6. #6
    TekCat
    Guest

    Default Re: what to do with overflow?

    the return area of the sump is only 3 gallons, so it gets "dry" fast. I
    could try to make bigger sump, or ... maybe making new teeth in overflow
    skimming box could do the trick?



    "Wayne Sallee" <Wayne@WayneSallee.com> wrote in message
    news:ctU2f.13282$QE1.5418@newsread2.news.atl.earth link.net...
    Get a biger sump, and/or improve your overflow.

    Your water level in the sump will drop when the pump is running, and go
    back up when the pump is not. Does the tank come close to overflowing, or
    does the tank water level run at a normal level?

    Wayne Sallee
    Wayne@WayneSallee.com

    Charles Spitzer wrote:
    "TekCat" <tek_catNOBS@hotmail.com> wrote in message
    news:digutj$ea9$1@domitilla.aioe.org...

    I have a Quietflow 600 hang on overflow box... supposedly it should take
    care of 600GPh. Also I have pump that is pumping from sump to the tank,
    it
    is Dolphin DP 560. With 2' head loss the chart says it would output
    460GPH.
    So far so good, but the overflow doesn't seem to take 460gph quite well,
    I
    get my sump's return area empty very quickly, this means one thing that
    the
    pump pumps faster than overflow can handle. Any thoughts on how to solve
    this?


    throttle the output side of the pump, or get another/bigger overflow.

  7. #7
    Charles Spitzer
    Guest

    Default Re: what to do with overflow?

    i'm curious, why would increasing the size of the sump work? i would think
    that since the pump is emptying it, eventually either the pump will empty
    the sump and run dry, or the tank will overflow because not enough water is
    coming out of it.

    "Wayne Sallee" <Wayne@WayneSallee.com> wrote in message
    news:yPW2f.12471$vw6.6576@newsread1.news.atl.earth link.net...
    How many gallons of fluctuation are you getting between pump on, and pump
    off?
    What's the size of your tank?

    Wayne Sallee
    Wayne@WayneSallee.com

    TekCat wrote:
    the return area of the sump is only 3 gallons, so it gets "dry" fast. I
    could try to make bigger sump, or ... maybe making new teeth in overflow
    skimming box could do the trick?



    "Wayne Sallee" <Wayne@WayneSallee.com> wrote in message
    news:ctU2f.13282$QE1.5418@newsread2.news.atl.earth link.net...

    Get a biger sump, and/or improve your overflow.

    Your water level in the sump will drop when the pump is running, and go
    back up when the pump is not. Does the tank come close to overflowing, or
    does the tank water level run at a normal level?

    Wayne Sallee
    Wayne@WayneSallee.com

    Charles Spitzer wrote:

    "TekCat" <tek_catNOBS@hotmail.com> wrote in message
    news:digutj$ea9$1@domitilla.aioe.org...


    I have a Quietflow 600 hang on overflow box... supposedly it should
    take
    care of 600GPh. Also I have pump that is pumping from sump to the
    tank, it
    is Dolphin DP 560. With 2' head loss the chart says it would output
    460GPH.
    So far so good, but the overflow doesn't seem to take 460gph quite
    well, I
    get my sump's return area empty very quickly, this means one thing that
    the
    pump pumps faster than overflow can handle. Any thoughts on how to
    solve
    this?


    throttle the output side of the pump, or get another/bigger overflow.

  8. #8
    Wayne Sallee
    Guest

    Default Re: what to do with overflow?

    Because I don't think that is the true problem. Maybe the
    overflow lets the water fluctuate more than he wants, but
    I think that the bigest problem that he is having, is that
    the water volume in the sump is so small that it does not
    give him adiquate room for that fluctuation.

    Wayne Sallee
    Wayne@WayneSallee.com

    Charles Spitzer wrote:
    i'm curious, why would increasing the size of the sump work? i would think
    that since the pump is emptying it, eventually either the pump will empty
    the sump and run dry, or the tank will overflow because not enough water is
    coming out of it.

    "Wayne Sallee" <Wayne@WayneSallee.com> wrote in message
    news:yPW2f.12471$vw6.6576@newsread1.news.atl.earth link.net...

    How many gallons of fluctuation are you getting between pump on, and pump
    off?
    What's the size of your tank?

    Wayne Sallee
    Wayne@WayneSallee.com

    TekCat wrote:

    the return area of the sump is only 3 gallons, so it gets "dry" fast. I
    could try to make bigger sump, or ... maybe making new teeth in overflow
    skimming box could do the trick?



    "Wayne Sallee" <Wayne@WayneSallee.com> wrote in message
    news:ctU2f.13282$QE1.5418@newsread2.news.atl.earth link.net...


    Get a biger sump, and/or improve your overflow.

    Your water level in the sump will drop when the pump is running, and go
    back up when the pump is not. Does the tank come close to overflowing, or
    does the tank water level run at a normal level?

    Wayne Sallee
    Wayne@WayneSallee.com

    Charles Spitzer wrote:


    "TekCat" <tek_catNOBS@hotmail.com> wrote in message
    news:digutj$ea9$1@domitilla.aioe.org...



    I have a Quietflow 600 hang on overflow box... supposedly it should
    take
    care of 600GPh. Also I have pump that is pumping from sump to the
    tank, it
    is Dolphin DP 560. With 2' head loss the chart says it would output
    460GPH.
    So far so good, but the overflow doesn't seem to take 460gph quite
    well, I
    get my sump's return area empty very quickly, this means one thing that
    the
    pump pumps faster than overflow can handle. Any thoughts on how to
    solve
    this?


    throttle the output side of the pump, or get another/bigger overflow.


  9. #9
    kim gross
    Guest

    Default Re: what to do with overflow?

    Wayne Sallee wrote:
    Because I don't think that is the true problem. Maybe the overflow lets
    the water fluctuate more than he wants, but I think that the bigest
    problem that he is having, is that the water volume in the sump is so
    small that it does not give him adiquate room for that fluctuation.

    Wayne Sallee
    Wayne@WayneSallee.com

    Charles Spitzer wrote:
    Correct.

    Depending on the size of the tank, if the water level raises 1/4 of an
    inch it could be more than 1.5 gallons of water alone, let alone the
    water in the pipes. 3 gallons is not much water, and most overflows
    depending on the tooth arrangement can use up to 1/2 or even 3/4 of on
    inch of water to build up before they are close to max flow, and if the
    overflow needs 3/4 of on inch of water in a 72x18 tank, that would be
    around 4 gallons of water, so the sump would run dry before the overflow
    got to max flow rate..... An of course if he has a long pipe run with
    large pipe there could be a gallon of water in the return pipe also.


    Kim

  10. #10
    Marc Levenson
    Guest

    Default Re: what to do with overflow?

    The return section of your sump is too small. You'll need to keep
    adding water just to keep up with what it sucks up, just until things
    even out. Add too much water, and when the return pump is off, the sump
    may overflow from that additional water volume.

    Marc


    TekCat wrote:
    I have a Quietflow 600 hang on overflow box... supposedly it should take
    care of 600GPh. Also I have pump that is pumping from sump to the tank, it
    is Dolphin DP 560. With 2' head loss the chart says it would output 460GPH.
    So far so good, but the overflow doesn't seem to take 460gph quite well, I
    get my sump's return area empty very quickly, this means one thing that the
    pump pumps faster than overflow can handle. Any thoughts on how to solve
    this?

    --
    Personal Page: http://www.sparklingfloorservice.com/oanda/index.html
    Business Page: http://www.sparklingfloorservice.com
    Marine Hobbyist: http://www.melevsreef.com

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