You don't want the plant to stretch by raising the light.im a 1st timer 2 but ive read for hours, they look good but if its really buggin ya raise the lights 2 or 3 inches. will promote height growth. but if its true that upon flowering your plants grow 2 to 3 x the height does that mean your plants will be only like a foot tall?
Don't be so quick to call em pros, what they are using is much cheaper than the better alternative, however the amount of electricity in wasted spectrum, coupled with intenser heat and the cost of power to boot, I'd assume pros used LEDs. After all, real pros have the money to invest in far superior lighting. It won't work commercial growers because of cost, but the ROI on these newest lights is awesome.Pros use 1000 watt systems for a reason...because our lights aren't sufficient, and they're the closest thing we have, to matching the sun's output.
I'd have to agree do not move the lights you do not want stretchy just take a look at my thread 5weeks flower and you'll see why I say that if they get too stretchy like mine you'll be trying to keep them upright when the buds start swellingIts Indica baby! short and bushy!