True but this is a little different, they're called swamp tubes. You just lay down about 10 pounds of lime, put a large tote/bin with the bottom cut out - on top of a scraped off swampy area and the medium wicks the water for no hassle watering, use slow release ferts and come back a few months later for your harvest if it isn't eaten, stolen or busted. These bags would save money and lugging, hauling x amount of huge rubbermaids is a pain in the ass (i'm assuming, this will be my first outdoor grow).