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The Unpowered Wicking Bed Controller automatically maintains the water level in the wicking bed between a low level and a high level. The high level should be just below the overflow level for the wicking bed. The gap between the low level and the high level can be set to any value between 27 mm and 60 mm. You can leave your wicking bed unattended for months on end.


The water supply for the Wicking Bed Controller can come from a mains pressure tap or by gravity feed from a rainwater tank. The high level for the wicking bed can be adjusted by moving the controller up or down.


If you have more than one wicking bed you can use the same Unpowered Wicking Bed Controller for all the beds. Connect the controller to one of the beds and connect all the beds together using the wicking bed drain pipes. All wicking beds will have the same high level and low level.



  • Completely automatic
  • No electricity is needed (no batteries, no solar panels, no solenoids, and no electronics)
  • Use for gravity feed or pressurised water supply
  • Adjust the float to achieve the desired gap between the high level and the low level
  • Simple and low tech, and so fewer things to go wrong
  • A single controller can control multiple wicking beds
  • Leave your wicking beds unattended for months on end

Unpowered Wicking Bed Controller

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