Return flow rate

Discussion in 'Pumps and Waterflow' started by ScottK, 14 Jul 2013.

  1. ScottK

    ScottK

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    I tested my return rate this morning and was a little disappointed to find I am only turning over the full volume of my tank twice every hour.

    I'm running a Dymax 5000lph return and am only getting around 800lph with my reactors connected and around 1000lph with the valves to the reactors set to off. Total volume is just over 400L's.

    Is it necessary if I am not running a DSB to be turning over the water 3-5 times? I do have a chamber full of live rock and sand, kind of a fuge I guess.

    I know the Dymax pumps aren't the greatest around, will something like a Waveline DC 5000 get me closer to 3 times turn over or should i be looking at something bigger?

    Any advice would be greatly appreciated :)
     
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  3. 459b

    459b Moderator MASA Contributor

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    I personally don't like water rushing through my sump, I prefer it to have more contact with skimmer/reactors. If you not running a dsb then flow through sump isn't that important.
    If your waters clean then I wouldn't change it.


    BUT those waveline pumps are fun, I just purchased the dc5000 and am very happy with it.
     
  4. ScottK

    ScottK Thread Starter

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    Thanks @459b I think i'll give the DC5000 a try. Hopefully it will get me close to 3 times turn over with my reactors inline and use a third of the power of my current Dymax which is rated at 125W.
     
    Last edited by a moderator: 26 Nov 2015
  5. garvin.blackmon3

    garvin.blackmon3

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    Question on flow and Pipe volumes..

    Will two 1 Inch Pipes carry the same volume as a single. 2 inch pipe?

    only pressure thru pipe is Gravity
     
    Last edited by a moderator: 20 Jul 2016
  6. Nella

    Nella

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    nope.... two Inch pipe wil have a much hire flow rate
     
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  7. RiaanP

    RiaanP Moderator

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    2 inch will allow a lot more water than a 2 * 1 inch pipe.

    a 1 inch pipe got a cross section of 5.067cm2
    where a 2 inch pipe cross section is 20.268cm2

    So the 2 inch will take a lot more water.
    But also keep in mind, that the 2 inch pipe will have 4 times that much water inside the pipe. So 4 times as heavier as the water in a 1 inch pipe. Due to gravity that is also back pressure on the pump. Or more work for the pump to be able to lift the water column inside the pipe the required height to your display.
     
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