Ok so here is a question for you guys. I always used a chart similar to the one below when hanging my lights before when I started out and haven't measured actually distance in forever, just read the plants, but over the years have seen so many successful beautiful looking grows with their lights hanging way higher than what I thought would even work, like sometimes 4 feet above canopy. For example my new cobs say 18 inches from canopy but I see people with blurples hanging 4 feet up. What gives?
|Grow Light||Closest||~ Sunlight||Furthest|
|150W||8″ (20cm)||10″ (25cm)||12″ (30cm)|
|250W||10″ (25cm)||12″ (30cm)||14″ (35cm)|
|400W||12″ (30cm)||14″ (35cm)||19″ (48cm)|
|600W||14″ (35cm)||16″ (41cm)||25″ (64cm)|
|1000W||16″ (41cm)||22″ (55cm)||31″ (79cm)|