syphon break help plz

Discussion in 'Beginner Discussions' started by jakethehake, 5 Mar 2015.

  1. jakethehake

    jakethehake

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    Hi guys i have a tank that is drilled at the back where my return water pumps in how do i incorperate a syphon break into that 20150228_170312.jpg

    20150228_170312.jpg
     
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  3. 459b

    459b Moderator MASA Contributor

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    How do he return pipes enter there tank?
     
  4. 459b

    459b Moderator MASA Contributor

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    Can you post a pic of them from he side
     
  5. RiaanP

    RiaanP Moderator

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    [​IMG]

    Something like this.

    Return box at exactly the same height as the overflow.

    No siphon break needed at all.
    I've done this design now on 4 different tanks. 2 of them nano tanks, Nanocube24 and a TL550. There the glass panel in front of the overflow extends and makes the front of the return box. On my current big tank, the overflow is on the left short side. The Return box on the right hand short side. At exact the same height.

    Here is the return box on my current system
    [​IMG]
     
  6. 459b

    459b Moderator MASA Contributor

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    Doesn't that return box effect the return pumps efficiency?
     
  7. RiaanP

    RiaanP Moderator

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    Return pump should anyway not be seen as a power head.

    Plus on both the nano tanks it gives a nice circular surface movement. Pushing the gunk to the overflow.

    And as long as the slit at the top is length 8 width is more than the diameter of the return pipe, it cannot restrict the flow coming up.
    Obvious you need enough space between the bulkhead and the front glass to let the water out. That is why the box inner width is 20mm.
     
  8. jakethehake

    jakethehake Thread Starter

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    The middel two pipes are my oferflow and the other two my return

    20150228_170300.jpg
     
  9. RiaanP

    RiaanP Moderator

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    picture of your return as seen from inside the display tank please.
     
  10. jakethehake

    jakethehake Thread Starter

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    This is from the side

    20150305_172113.jpg
     
  11. jakethehake

    jakethehake Thread Starter

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    It has 2 inlets and the ball valve on the far side i can turn it off and have one inlet

    20150305_172131.jpg
     
  12. jakethehake

    jakethehake Thread Starter

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    From the inside

    20150305_172120.jpg
     
  13. 459b

    459b Moderator MASA Contributor

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    How far below the water line are the return pipes, depending on depth you may not need a syphon break
     
  14. NO3

    NO3

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    You have actually set yourself quite a challange!!

    if it was me id take a T peice instead of your elbow then reduce the top of the T(the part facing the roof down to airline size id then run a long airline into the top of the tank just in case water pushes out of it!
     
  15. RiaanP

    RiaanP Moderator

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    I would do the return boxes. The front panel top side level with the cuts in the overflow comb.
    So when you switch off the return, water can only drain that much, basically the water head only.
     
  16. jakethehake

    jakethehake Thread Starter

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    Think i found a solution ?

    MFAca9y9caYlNmpoarWWJmp9yvKj2CRLGyZdKxX4GA8F7UoM-1vzS9Nn6YiNrJD_MOcxVz1Uc98CotzNc3HLUVZfopAh1qU.jpeg
     
  17. jakethehake

    jakethehake Thread Starter

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    Pop that onto my return line
     
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