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I'm not well versed in that area but yes there is a major difference. The viperspectra light is blue/ purple color. Looks like being in a space ship. The HLG's are blinding white light although they have red diodes as well.

But if it's a nute issue how come this room is the only place it happens? I feed all my plants the same , it only happens in this room under the HLG's

thats like a week timespan of my temp and H swings^

I follow the nectar for the gods full feeding schedule to a T. Doing feed, feed, compost tea. And my temps were like 77°f and like 68°f ish at night before I turned my lights all the way down, removed the pulleys and zip ties then directly to the ceiling

Exactly, the problem goes away if I put em in my viperspectra tent. And I do compost teas, slf-100, photo plus microbes, and full like of nectar for the gods. My tent plants and outdoor love it. My hlg room even loved it when the lights were stupidly low, but as soon as I turned them up is when...

just for the sake of references to show I'm not an idiot, these are some of my outdoor girls this year in promix. Same strain I'm having issues with indoors. And these bitches I would water out of the hose half the time! No pH, no nutes sometimes for a week or two weeks. Also in promix hp.... So...

Now this is TWO days after turning the lights up to 800

they were getting quite bushy actually , This is still at 200 ppfd !! It makes zero sense I know.

so I turned the lights all the way down, and raised them all the way up and the burning went away completely. They had a nice stretch. Then day 21 I took down the tapestry so I could get my reflective walls back, and I turned up my lights. According to my apogee meter 800 at the canopy. Which...

So this started happening early veg. The exact same leaf burn. So I backed the lights way off, and covered the reflective walls

To summerize again with photos : First two pics are tent runs of mine with the HLG 600's, turned all the way up. I was pulling over a pound and a half. So I decided fuck it I'll build a room. Next pic is the first issue I got in the room, you'll see the burned leaves early in veg. Same...

Agreed , to to summerize here, there is another factor making them ultra sensitive to the light. That is what I need help with. But as I've mentioned I have tents under blurple viodrspectra LEDs that get the exact same treatment as far as soil and nutes go and I can't get them to slow down, they...

For sure, those are days the lights were dialed up higher , I've kept turning them down hoping the burning would stop. They have been all the way down for a while now. The ppfd reading at the canopy is back at 200 , which is rediculous. I wanna be running these lights at full power like I used...

In veg I preventative spray with azamax, maybe once every two weeks. I've never sprayed in flower

A head scratcher indeed. Thanks for the insight though. But ya your right in that it doesn't make sense it's JUST light stress, cause I ran these lights at full power in tents with zero issues. Now this is run #2 in the room where the EXACT same issue is persisting. So it may not be light stress...

Here are my temp and humidity swings over the past like 4 -5 days

I have the autopilot system for my CO2 regulation. It does turn off at night, and my exhaust pushes out hot and humid air, along with CO2, so I'm sure it goes down to somewhere around 400 at night time, but I will check . I have never heard of any growers running an oxygen tank at night but is...

It sounds like you are in the right department of solving this! My topsoil looks muddy because I use nectar 4 the gods nutrients, and compost teas, in promix hp. I used to use Mills and the soil never looked like that but I switched to nectar and teas and now it does. My ppm right now when...

Yes thank you. Everyine tells me it's a a deficiency they say either call mag or P. Well it's not that's impossible my soul is rich with nutrients and ideal oh in a slurry tests , plus I pH my feed every watering and check runoff when I get enough. That mylar is a good idea, if you look at last...