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Gravel bed siphon won't start

Discussion in 'AQUAPONICS MADE EASY interactive discussion forum.' started by PaulUrban, Jan 7, 2018.

  1. PaulUrban

    PaulUrban New Member

    Joined:
    Jun 29, 2017
    Messages:
    2
    Before anyone quotes flow rates, it's not that.
    Newly renovated system with Murray's FRP grow beds. Two beds beside each other with independent valves for flow adjustment. Bed 1 is working brilliantly at 4 ltr/ min. Bed two won't start anywhere between 4 to 6 ltr/min. Have spent a few hours adjusting flow rates to test.

    Next swapped them over and the problem moved with the swap. So pulled sypnon apart made the second one the same as the functional first one. Still no luck.

    The only difference now physically is that The original owner seems to have masked off one of the two slots in the functional syphon. Will try that but still open to solutions.

    The only way to start syphon 2 is by manually lifting and dropping to get it started.

    Currently in cycling mode so no rush.

    Idea's please.

    Regards,
    Paul Cobbin
     
  2. Kevin John Mitchell

    Kevin John Mitchell New Member

    Joined:
    Jan 11, 2018
    Messages:
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    Country:
    Australia
    State:
    NSW
    City:
    Coleambally
    To clarify, you remade the one not working to be the same as the functional one? Did you use the same components / pieces as before or brand new?

    I am thinking along the lines of an air leak somewhere. Perhaps a cracked pipe or join that is not air tight.

    You do mention the masking off of an area in the original.
     
  3. Murray

    Murray Site Admin Staff Member

    Joined:
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    Brisbane
    How did you go with this?
     
  4. Ringer2

    Ringer2 New Member

    Joined:
    Feb 17, 2018
    Messages:
    5
    Country:
    Australia
    State:
    Qld
    City:
    S.E.Qld
    Hi Paul,
    Do they share a common drainage line (two in to one) or are they completely independent using separate pipes?
     

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