90-100k lux but no stress? (led)

Does it still hurt/stagnate my plants if lux is 90-100k and they show no sign of stress? Temp and rh is in order. Lights are 21-22" above plant canopy.

They have been growing with that intensity for a week now since switch, but used high intensity in veg as well.

Also wondering how accurate lux meter app is on my P30 Pro, when measuring leds that got IR and UV?

Unless you have a good light meter like the Apogee MQ-500 I would just go with what the plants say and ignore the reading you are getting.

Ok thx for the quick reply.

Renfro said:

Unless you have a good light meter like the Apogee MQ-500 I would just go with what the plants say and ignore the reading you are getting.

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I actually just posted this on the led section. Thought it might be better than the newbie central. But like the noob I am, I didn't realise I cant just delete this one..

Destroyer of chairs said:

Does it still hurt/stagnate my plants if lux is 90-100k and they show no sign of stress? Temp and rh is in order. Lights are 21-22" above plant canopy.

They have been growing with that intensity for a week now since switch, but used high intensity in veg as well.

Also wondering how accurate lux meter app is on my P30 Pro, when measuring leds that got IR and UV?

View attachment 4671710View attachment 4671711

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Those are some nice bushes you have! Try to buy Mylar to line the inside of the grow space for more reflection throughout the canopy, other than that beautiful

Raspberrykiwi said:

Those are some nice bushes you have! Try to buy Mylar to line the inside of the grow space for more reflection throughout the canopy, other than that beautiful

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Thx for the tip and compliment. Painted the walls matt white for reflecting of light. Saw the mylar rolls but decided to go for next best as it saved me a few bucks, reflect OK and doesn't create any hot spots.

Still no sign of heat/light stress as far as I can tell. Forgot to mention got 3x 240w QB in a 3.3x4.4 feet area. Lights are 19-20inches above top growth.

Could it be possible I can even lower the lights?

Renfro said:

Unless you have a good light meter like the Apogee MQ-500 I would just go with what the plants say and ignore the reading you are getting.

Click to expand...

Looks great! Plants are loving what ever is going on so keep it that way.

My understanding is that if the lights aren't visibly hurting the plants, they will be better off with more light. The benefits from adding more light keep getting smaller as you push up the levels. As I understand the photosites need repair according to the number of photons received so you can't avoid that with lower intensity either. Blast them with as much light as they can take and you are willing to waste.

^assuming healthy plants and meeting other demands