The pump comes with everything you need (20' discharge tubing, injection fitting, spare pump tube, suction strainer, etc) except the tank and a tap into your plumbing. If you get the high pressure pump, the injection fitting is also a check valve. On the low pressure pump, it's only an injection fitting.
If you buy the tank and pump combo, the suction line/strainer is pre-installed and the pump mounted on the tank.
All you need to do is tap into your plumbing (1/4" or 1/2" tap, either will work) and hook up electrical with some kind of timer. The only thing on the pump is an on/off switch.
