Today we were sad to see that some of our plants are not doing so well. Some of them are looking died and other are turning yellow. We are not really sure why this is happening to the plants. We have done ever thing that has been ask for like checking the pH, putting in nutrient solution, and lighting. We even tried routing the cups so that way the air pump would not be directly underneath the plant. After doing that we also decided that we should pull the air pump back so that way it is not under any of the plants. Hopefully this helps us!