this will be first grow I've germinated my seeds, planted and now they've sprouted to be around an inch or maybe just over a couple days after breaking the soil, I've had the plants on 24/0 under 300w cfl & they look healthy enough but after reading more in depth I'm considering using 20/4 or even 18/6 so what I'm asking is will I harm/stress them by changing the lighting schedule? and if I was to change it when would be best? now while they're only couple days old or??? any help/knowlage would be greatly appreciated new time grower trying to learn the ways! thanks.