I have a load of water butt rainwater storage linked to my gutter downpipes for my garden water needs, but I can't stand around waiting to fill watering cans from taps on butts, so occasionally (once a week?) decant (say) 80l from the water butts into plastic dustbins so I can then just dunk a bucket in the bin (takes seconds to fill) as needed and pour the water where it is needed.

However, I'd like to use a hose too, so would like a water butt (maybe 100L) high on an external wall to feed the hose by gravity...

The challenge is filling that elevated tank... As I'd only water maybe 50L twice a week, a weak slow pump to fill that butt is fine (solar powered, 100L a week, to (say) 20ft (6m)).

I'd appreciate any input/experience people can give before I start experimenting with this! I know mains powered water-butt pumps are available, but I am keen on an elevated 'water tower' for my hose... then I have options for how I get the tank filled.


  • Is there a specific question?
    – LShaver
    Jan 18, 2021 at 15:19
  • @LShaver No. Not a specific question, loads of em! I thought someone may have already solved this... And the upvotes suggest other people are hoping others have too! I guess not - but I have shifted to kratky based hydroponics, so sidestepping the regular watering thing entirely...
    – pperrin
    Jan 18, 2021 at 21:58

1 Answer 1


Unanswered questions hang around - so I am posting an answer... of a kind...

My intention was to have a gravity fed system, using 'renewable' energy when available to keep the 'gravity fed source' topped up.

I did not find a solution.

But have now moved on to Kratky style hydroponics, so don't need a running source of water, or externally powered systems.

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