The versa 5G DWC non-recirculating system is built to last for years and years. Using 90 mil 5 gallon plant sites. Each individually valved Includinf a double valve setup off the central reservoir so you can detach without spilling virtually any liquid. , makes this one’s of the best non recirculating systems available on the market today. Using gravity to control the plant site water levels  by simply adding or subtracting from the reservoirx Allowing your plants precious root systems un- shocked or stunted like in the stand alone plant site kits. this system comes with four 2 x 2“ quality airstones the versa air 18 W 38L/min  commercial grade air pump, pre washed hydroton, 8 pack rock wool cubes with6@ net pot lids, Combined total of 10 foot of half-inch black vinyl tubing already Cut inmate into your feed line consisting of half-inch tees elbows straight connectors and valves making the set up smooth and simple. You can’t go wrong with the root system had a great price providing you everything but nutrients and seeds in the sun