#lights

Quick question. Is there any issue with starting autoflower seedlings out under CFLs and then transferring them into a greenhouse type space with natural sunlight?

so i just finished my 8x8 grow room in the basement i have a few questions. to start i am gonna be running 4 slim 600h by optic led for maximum light coverage. i will be growing in coco. my first question is that the floor is concrete and i am trying to figure out should i build something to get...

Do you think it makes sense to mix blurp (45W) lights with my new horticulture quantum lights HLG65 ? Will it help having the extra lighting ? I can't see why not. New lights (X2) - https://www.amazon.com/dp/B076QDKVDZ Old lights (X6) -...

I have come across some really cheap and barely used 1000w ballasts. Im hoping that this will allow me to use any wattage of bulb upto and including 1000 watts or am I only able to use 1000w bulbs with 1000w ballasts? How necessary is it to match up the lights and ballasts 100%? I understand...