At one point, the water in the reservoir became anaerobic, causing the plants stress, so I cleaned it out along with the tray and reapplied the BioBizz nutrients according to the chart. I also added an aquarium pump to help keep the water stirred. When using organic nutrients, I realized that the pipes can become clogged, so every four weeks, I flush and clean everything. Other than that, and some temperature heat waves that I struggled with, the plants were happy.