Plants are unable to adjust to high lumens. Need help.

[TribalSeeds]

Light intensity, hmm. How far are the lights from the plants? Mine are 6-8 inches from 1000 watt bulbs and this has never happened. Must have another angle perhaps you have not noticed. Good luck regardless. Peace GS

How much do you have to feed them to keep the bulbs that close? Is this hydro?
I had a little burn when I added KB powder to my base nutes at 1.2ec w/blumats & coco. So I lowered my EC to 1.0 with the KB in there and I noticed my plants are getting bleached again.
My 600's were about 16-18" from the bulb, but now Ive moved the glass to 18" from the tips. When I was feeding them 2.0 EC I had the glass less than 12" away.
Now Im torn between the Koolbloom powder and just using higher base nutes and keeping the lights closer.

 

[SneakySneaky]

What's the temp, humidity, brand of coco, and nutes? Had something like this happen, was doin 5 gallon coco pots, the added intensity from lights was drying coco on top so fast it was causing salt buildup. Switched from once a day feeding to a pump timer that ran every 8 hours, feed 2x lights on and once at night.

 

[Greenheart]

How about the rootbase? Big and healthy or smallish freshly transplanted into larger containers? I like transplanting and then blooming when the rocket growth starts appearing as she spreads her feet.

I would also have to agree I'm curious as to the temps, humidity level, and room size vs air exchange?

Damn thats alot of light! You didn't put it in that little pull behind trailer by the woodshed did you? Your definitely know whats up so please forgive me I coudn't resist. I imagine it will be awesome to see that room rocking from behind the welding goggles once you get it dialed. https://www.icmag.com/ic/showthread.php?t=205673

 

[RockyMountainHi]

Sounds like root aphids

Are the plants recovered after the dark period, then stressed at the end of the lights on?

You may have noticed little flying bugs, they show up when it's a full blown infestation. The bugs munch the roots and the plant can't keep up.

get a magnifier and check your roots, if ya see summtin movin, or more precisely, LOTS of summtins movin; you found the problem.

 

[vukman]

Damn thats alot of light! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I imagine it will be awesome to see that room rocking from behind the welding goggles once you get it dialed. https://www.icmag.com/ic/showthread.php?t=205673

ROFL....welding goggles!! you ain't kidding

 

[turbo14]

New place, new climate, new sun...

Feed em' once with Liquid Karma @ 20ml's and a nice scoop of Great White.

Or Hit them with them with a nice Aerated Compost Tea.

Kelp and Humics = Leaf Praise

turbo

 

[BongToke]

I have had my plants claw up and turn yellow when under my 1000 watt bulbs, but when under my veg 400's were fine and a nice dark, healthy green. It turned out (for me anyways) that my nutrients were too low. The plants seem to use way more nutes when under intense light, but when under lower light levels don't go through as much, hence being fine under lower light. I added more veg nutes and all was well. I don't know if this is your problem, but is it possible for some reason your nutes have gone bad, bad batch or just under ferting? I doubt it since you really know what you are doing, but it worked for my garden. I hope this helps.

TGT

x2 this is exactly what happened to me recently, I had a bunch of plants under a 400w CMH then switched to a 600w hps and also added a thou beside em and I started to get a little yellowing and they also clawed up a little , bumped up the nutes and everything is turning around now, they defiently use alot more nutes under stronger lights

 

[lightforms]

My two cents.. Problem is not light intensity. Good luck!

 

[redneck shogun]

Had something similar happen to me then moved a group in. I later put a different strain in and didn't have a problem. Wasn't really paying attention to the humidity, could of been that for me too.

 

[TGT]

Any news on how things are going for you?

TGT

 

[Green Supreme]

How much do you have to feed them to keep the bulbs that close? Is this hydro?
I had a little burn when I added KB powder to my base nutes at 1.2ec w/blumats & coco. So I lowered my EC to 1.0 with the KB in there and I noticed my plants are getting bleached again.
My 600's were about 16-18" from the bulb, but now Ive moved the glass to 18" from the tips. When I was feeding them 2.0 EC I had the glass less than 12" away.
Now Im torn between the Koolbloom powder and just using higher base nutes and keeping the lights closer.

Veg gets 1530 ppm, flower 830 ppm on a feed, water, water schedule. Peace GS