As long as they are green keep growing them. Try shortening the stem on half and leave the other half with long stems. See which ones do better. I don't snip any plant part unless it's dead. Turtle you're making this way too hard. Make a bubbler and put the water level just below the stem Leave this on 24/7. If the leaves start curling (mine did) it's too much light. The bubbler can be just plain water. In 7-9 days you will see roots or root buds. There is a picture of the one I made for $12 on my grow thread. So do a bunch of different things to see which ones you like best. Zandor always says if this is your first time grow, put a few in dirt, till you get the hydro worked out. In my grow I have 5 soil and 5 hydro. I already know how to grow and hydro is keeping me really busy. The soil plants are alot easier.