It's a rainy day. I stayed inside and put down the three remaining pipes on Tower 1. I also hooked up the relay for shelf 3 to the relay box which I mounted on the wall. Programmed the controller to do a 15 second watering cycle at 2 PM. It did this but we decided it needed more water so I did 15 more seconds at 2:20. The mistake was doing a third watering, this time manually for 5 more seconds. This flooded the bench too much but all the plants are now watered. Libbie said we need an LCD to show what's happening. I agree and started looking into deploying one. Arduino has an LCD library available. This was a successful day. Libbie also talked to a guy named Keith at Family Garden Center about buying the greenhouse steel. I prepared a price list of all the equipment.