The ClearBlue PVC tee junction can be placed anywhere in the plumbing of your pool or hot tub. Ideally, it should be placed as close to the water or filter as possible.The tee can be horizontal or vertical.
The ClearBlue electrode which houses the metal that creates the ions is threaded into the tee.
The ClearBlue controller is an electrical device that is fastened to a flat surface near the tee. A cord from the controller plugs into the electrode.