The Robuster is a unique system designed to automatically inject liquid fertilizers during every watering. It can be used to water anything from a couple of small pots up to as much as 600 GPH.
See also PDF download: The Robuster Injector System Description
The Robuster has been designed to use Sunshine Boosters liquid fertilizers to provide maximum effect. It can, however, be used with any other brand of liquid fertilizers that require a dosage from 5 - 25 ml/gallon.
The Robuster electrical components must be protected from elements. It can be in a shed or greenhouse or in a waterproof box as illustrated in the above photo.
The Robuster is assembled in the USA and comes with a 180 day warranty
The Robuster installation instructions and map:
For more information see the Blog post here
Units are now in production! Order here