http://www.petco.com/product/109838/PETCO-Air-Pump.aspx
Check out these pumps from PETCO... These are all I use... The biggie is Model 9904 5Watts and it has 4 outputs with a variable control for the output... . Comes with lines stones, and check valves...$19.95... These things are sweet and cheap!!
Just clicked this link and they are on sale for 35% off, thought it was worth a bump.
thats should be ok for one container. I use 360L/min with 24 5 gallon buckets, but used to use more. The more the merrier, if you get a chance to grab a second pump or one with much higher output I would suggest it. Oxygen in the nutrient mix is the name of the game in DWC, its ok for now but increase later.
http://www.hydroponics.net/i/136485
^^^ this is what I use :-D
That pump you posted would be alright for like a 1qt cloner