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  • Yeah I've been eyeing them up. Thing is they all come with a tiny hose and I want to attach it to a c.20m garden hose. Trying to work out if I can find one the same bore.

    @JurekB surely the vacuum is just to get the system started? once that's remove it has no influence on flow rate .

  • Correct. Either you or a more efficient apparatus sucking only needs to get the 'water' below the base of the upper tank, preferably filling the entire hose, gravity will do the rest.

  • IME if you give it max vacuum from the outset - by pulling the wire through sharply - it'll maintain that flow rate.
    Some physicists will be along shortly to correct me.
    I last did this 40 years ago.
    And it was dark.
    ^ Sounds like I've been duly corrected. Ta @Colin_the_Bald.

  • Jiggle syphon sounds like a long stand and tartan paint, hence why I said it.

    Don't bother buying a jiggle hose they are poor at fluid transfer from experience.

    https://www.youtube.com/watch?v=LZ06_BYgNOA

  • Pre fill the hose and cap off both ends.
    For a garden hose, Hose lock spray nozzles twisted to off work fine.

    Position lower end ready
    Run hose to top tank, remove cap and submerge the end before loosing much from the hose.
    Open/remove lower nozzle.

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