What size resevoir should i use for one or two plants?

Well i want to start growing hydro aeroponicly and i was wondering what kind of things i mite need to get started. First of all I need a water reservoir and i have no clue what size i should get =/, i'm looking to grow only one or two plants. I was thinking about a tupawear one maybe?

-Thanks in advance

A 25 gall. tote would be fine

damm do i really need one that big? my grow space isnt so large, its about 2'x2.5', lol what about one plant?

You can certainly get a smaller one...but a 25 is only like 2 feet by a foot and a half or so. You should fill your entire space since it is so small. If it were me I would go to wal mart or where ever and find a tote that fits that space to the fullest.