quick question for you guys, i looked around and found a couple different answers but i just want to get this straight. ok i have 3 plants. 1 plant succesfully sprouted 2 days ago and im still waiting on the first leaves to come, my other 2 plants just sprouted today and are a little behind the first. They got probably 45 minutes of light while i was working on my growbox today. when do i start giving them some light? should i gradually work up to 18 hours of light a day or just switch it on now? also i dont want to start the light if only 1 of the plants is ready for it correct?