The timer. This is the most important and expensive part of the system. It will be necessary for each different garden to establish how long the pump needs to run to water the plants. I my case with my 2 gallon Hempy Buckets I have to let the pump run for 4 minutes every other day in order to keep them happy. The only way to be able to do this is with a DIGITAL timer. You can program it to water everyday multiple times, every other day or only on weekends. You can also program it to run for only a minute. This is nice for small pots. The timers that have the red and green trippers for shutting on and off will not work. The smallest increment of time for adjustment is 1 hour. Home Depot has the one I have for $20, has a battery backup and it's easy to program. |