yeah that was the idea, the 2ltr thing.. i have 3 left like that, the others are in the soda bottles wit the bottoms cut off.. there are holes poked on the bottom of the wall and underside of the styro cup, so they did have some kind of drainage.. i had a plant that was already in a 1gal pot.. but 2days after feeding it wilted completely over and died within a day.. i didnt even have enuff time to get responses on the issue when i posted, let alone act on the suggestions when they came in..