This Basic Pre-assembled Hydroponic Kit is available from Amazon or directly from the manufacturer. You can also build your own. The real question is: Do you really need a circulating hydroponic kit? You can achieve similar results with the
Kratky method of non-circulating, off the grid hydroponics.
This video shows you how to set up the Stealth Hydro DWC Basic Kit:
Stealth Hydroponics, Inc - Deep Water Culture http://buff.ly/1fN1Wm9
3 Ways to Build a Homemade Hydroponics System - wikiHow http://buff.ly/1ddk1tY
Free Hydroponic Setups Plans http://buff.ly/1fN1VOU