light duration

[Aquattro]

As I mentioned, I would run them 7 or 8 hours max, so count backwards from bed time and have the lights come on then. Doesn't really matter when the 8 hours happens, so if you need to have main lighting come on at 6pm, fine. My lights ramp from 1% over night, go from 1 to 100% by noon, start ramping down at 8pm so that by 11pm they drop back to 1% overnight.