What is the max LUX the top of the plant should get in flowering?

EverythingsHazy

Well-Known Member
It really varies insanely depending on 1, where the plant is under the light (If its one plant directly under, the middle will still have much higher lux) and 2. the distance. even a couple inches can almost double the lux hitting the plant surface, so you'd have to go by the max spot I guess...

It reaches ~100,000 lux a couple inches from the center of the xiture (240w 7 band htg led) down to 20,000 at around a foot away and off to the side where the furthest growth is.

Also, would pistils drying up before turning orange/red be caused by the led being too close?

It's confusing because good led fixutres produce almost no eat. the leaves wouldnt burn if they touched the fixture (based on temp only). AND if peopel say hps/mh is better, you shouldnt be able to burn the plants with light intensity using LED's otherwise, that would mean you hit the max amount of light the plant can handle. So more powerful is pointless unless you need to cover more space.
 

vostok

Well-Known Member
None that I know off, and I do know this stuff, so long as you keep the air and the plant cool, you can use the hps chart distance chart attached as an idea

HPS dist chart.jpg
 
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