I have yet to light proof my grow room and have just been running my lights 24/0 My question is can I switch to 18/6 even though I cant make it completely dark? the plants range from 2 to 4 weeks old.
Keep em on 24/0 for your entire veg. Your plants will show u their thanx. The only thing 18/6 will do is help you out on your electric bill.