This is a complete system.

Closet system 
Hydroponic setup. 
1 Root chamber & medium. 
2 Tanks aprox 40L. 
1 Pump. 
1 Timer. 
1 Exhaust fan 10'' min 
5 hose fittings. 
1 4L/hour Dripper per plant. 
Dripper tube &  Supply tube 

1 400w HID & ballast. 
1 Timer Switch 10 amp min. 
4 18W fluorescent fitting. 
1 Timer Switch 4 amp min ?? 

If set up as a flood and drain system the pump output is connected to the top end of the root chamber

The drain tank and pump are placed with the cloning chamber and fluorescent lights in the lower part of the closet if the clone lights have a separate Timer or are on 24 hours then the cloning chamber must light sealed. 
The pump is on a timer the nutrients from the drain tank are pumped up to drip feed tank at the top,  about 6 minutes per 4 hours this is enough to to keep the dripper to each plant going continuously.
The 400w HID is on a seperate timer 12 hours on/off