It is very important periods of time, you should use the clock. In the Growshop, I have recommended using 18 hours in the vegetative phase
amogutu Reviewed by amogutu on . timer for my grow I know for veg I go with 24 hours of light when I go to 12/12 do I need a timer to make sure it is 12/12 o the dot or will I be ok if I just flip the switch and say get of alittle time here or there Rating: 5