It's a form of hydroponics, Look it up in the grow section. Basically it is a 12"x20"x12" container (Size varies) with a cover with 6 round holes (I made my own), an air pump with bubbler attachments (Same as in a fish tank) that go in the tank. the above mentioned "tank" is the place where the 6 pots with the plants are set into so their roots will dangle in the water with liquid fertalizer added to the right porportion. A ph balanced water must be used for best results, as important, is the amount and type of liquid fertilizer used. All information can be found on the net. I made mine with a 7.00 container from walmart, the cups and medium, little clay balls, were purchased from Ebay, in fact the only expensive thing was the lamp, I believe I paid less than 150 bucks for that, and yes, I got over 16 OZs from my closet which was 2'x4'x6', so growing weed is cheap if one knows how, it is easy as pie, it is a weed after all. less than 300.00 for my first grow (Less electricity and that was nominal) after that, about 200.00 for 16+Ozs. It was done regardless of what these "super growers" tell you. Seeds, well the first time I had to purchase seeds, then I grew a male along with my females and fertalized one stalk of big mama, got about a thousand seeds, good combo, white widow and the midnight stranger, so seeds are not a problem. I could trade with my friends, but I don't smoke or go with the girls that do, so mine was just an experiment. All that smoked my plants raved about the potentcy and the high, so they must have been good. I still have a OZ+ in the safe, Don't know how long it will be good, but maybe in 10 years I'll try it again to see.