Quantity   Component name
1 × ESP8266-12 Wireless connection and processor for temperature, nutrient solution level monitoring and relay control for pumps
2 × Magnetic reed switch Switch to detect solution levels
2 × Logic Level Relay 5volt/120volt relay to control sump and reserve pumps
2 × DS18B20 Temperature Sensor To detect nutrient solution and ambient temperature
2 × Harbor Freight pumps One pump distributes nutrient solution to containers, the other is used to replenish solution from large storage container.
1 × Raspberry Pi
1 × 12 volt water valve