about water cycle?
 

Hey Ron,
When you switch from veg to flower and go down to 12 on 12 off, What do you do about water cycle? Is it true that you only need to water while the lights are on? Thanks.

Yes you only need to water when the light is on because without photosynthesis the plaint can't utilize the nutrients in the solution. But for convenience I water all the time, that is intermitely, (every 20 minutes) because I have had a few disasters with timers going bad. My plants don't seem to mind being watered unnecessarily. Ron