okay..before I transplant my babies outside I want to sprout them in the bottom halves of 2 liter soda bottles. How should I go about doing this? I figure you have to wrap the outside of any clear parts with tape to prevent sunlight from making contact with the roots. Should I poke drainage holes on the bottom? These bottles are going to go outside until they are about half a foot to a foot tall and then are going to be planted, soil and all into my grow spot.