Starseed.extracts
Member
Has anyone else had serious trouble with spectrum burn on leaves with the HLG or quantum board LEDS?
It's crazy how far away I have to keep my lights or else my leaves burn.
They were pretty burned in early veg, so I turned the lights all the way down and raised them to like 3 feet. Boom plants were loving life again they vegged great and filled out the canopy nicely. Even when I flipped to flower I left the lights raised all way up and dialed all the way down.
Now here's the thing, I caved and bought that apogee ppfd meter that can pick up the far red spectrum, damn thing was like 700$.
Well none of my reading make any sense for what my plants are communicating with me. I was at about 200 ppfd all throughout veg, if I turned them up any more my leaves would instantly begin to burn.
So I just decided to ignore the meters readings and listen to the plants, so I left the lights turned all the way down and as far away as possible.
Now after day 21 of flower, my buds were looking small, like real small. So I stupidly busted out the apogee meter and turned my lights up to about 800 ppfd at the canopy. Well within two days of turning up the lights, my leaves FRIED. So I turned my lights back down yet again, and praying they will recover.
So I've had many successful runs with these LEDs in tents. But then I built a room that is 11'x11' and put my four lights in it. This is my second run with all four hlgs running, and the EXACT same thing that happened last time. Everyone was very quick to tell me it was my PH, VPD, overeatering. Well it's not, it's these high intensity LEDS. I've grown weed under the sun, and under nanolux DE many times successfully. And even with these LEDs successfully when each one was in its own 4x4 tent. But for some reason having them in an array on the ceiling makes my plants burn to a crisp at low ppfd ranges.
Just wondering any one else notice/ experience this?
Btw I'm using nectar 4 the gods full nutrient line in soil. I do feed, feed, compost tea, repeat.
First picture is plants after I moved the lights away and dialed all the way down. I even covered my mylar walls with tapestries because it seemed the reflection of the mylar was contributing to the burn.
So the second picture is day 23 of flower, two days after I decided to turn my lights up to 800 ppfd and remove the tapestries exposing the reflective mylar again.
I do slurry tests. I check my runoff when I get it. I keep my temp and humidity dialed. My plants get plenty of calcium. Also after turning the lights up on the last run and the same thing happening, I took one plant out and put it under a viodrspectra blurple led, the new growth began to thrive and no burning occured at all. Likewise I brought a veg plant that was super healthy into my hog quantum board room and again within two days the leaves crisped up.
So I'm just not understanding why the ppfd reading from my apogee meter it's consistent with what everyone says.
There's something wierd about these high intensity r spec LEDs and I want to get to the bottom of it! Chime in of you've experienced what I'm talking about. If you've never actually tried growing with high intensity LEDS I don't need any input, because everyone who hasn't grown with them tells me it's a pH lockout. It's 100% not s pH issue. I also have the Hanna soil pen , I add slf-100 and compost teas, my rootzone is everything s plant could ask for. But if I turn my lights up to what is considered a normal range they fry.
It's crazy how far away I have to keep my lights or else my leaves burn.
They were pretty burned in early veg, so I turned the lights all the way down and raised them to like 3 feet. Boom plants were loving life again they vegged great and filled out the canopy nicely. Even when I flipped to flower I left the lights raised all way up and dialed all the way down.
Now here's the thing, I caved and bought that apogee ppfd meter that can pick up the far red spectrum, damn thing was like 700$.
Well none of my reading make any sense for what my plants are communicating with me. I was at about 200 ppfd all throughout veg, if I turned them up any more my leaves would instantly begin to burn.
So I just decided to ignore the meters readings and listen to the plants, so I left the lights turned all the way down and as far away as possible.
Now after day 21 of flower, my buds were looking small, like real small. So I stupidly busted out the apogee meter and turned my lights up to about 800 ppfd at the canopy. Well within two days of turning up the lights, my leaves FRIED. So I turned my lights back down yet again, and praying they will recover.
So I've had many successful runs with these LEDs in tents. But then I built a room that is 11'x11' and put my four lights in it. This is my second run with all four hlgs running, and the EXACT same thing that happened last time. Everyone was very quick to tell me it was my PH, VPD, overeatering. Well it's not, it's these high intensity LEDS. I've grown weed under the sun, and under nanolux DE many times successfully. And even with these LEDs successfully when each one was in its own 4x4 tent. But for some reason having them in an array on the ceiling makes my plants burn to a crisp at low ppfd ranges.
Just wondering any one else notice/ experience this?
Btw I'm using nectar 4 the gods full nutrient line in soil. I do feed, feed, compost tea, repeat.
First picture is plants after I moved the lights away and dialed all the way down. I even covered my mylar walls with tapestries because it seemed the reflection of the mylar was contributing to the burn.
So the second picture is day 23 of flower, two days after I decided to turn my lights up to 800 ppfd and remove the tapestries exposing the reflective mylar again.
I do slurry tests. I check my runoff when I get it. I keep my temp and humidity dialed. My plants get plenty of calcium. Also after turning the lights up on the last run and the same thing happening, I took one plant out and put it under a viodrspectra blurple led, the new growth began to thrive and no burning occured at all. Likewise I brought a veg plant that was super healthy into my hog quantum board room and again within two days the leaves crisped up.
So I'm just not understanding why the ppfd reading from my apogee meter it's consistent with what everyone says.
There's something wierd about these high intensity r spec LEDs and I want to get to the bottom of it! Chime in of you've experienced what I'm talking about. If you've never actually tried growing with high intensity LEDS I don't need any input, because everyone who hasn't grown with them tells me it's a pH lockout. It's 100% not s pH issue. I also have the Hanna soil pen , I add slf-100 and compost teas, my rootzone is everything s plant could ask for. But if I turn my lights up to what is considered a normal range they fry.
