Wtf?

Nitrogen toxicity?

Sent from my SM-S120VL using Tapatalk

 

I'd guess that it's more sensitive to the heat than the others, but without a full colour photo of the whole plant, its just a guess really

 

Be interesting to see what people say... I had same issues 2 runs ago, just went all curly like burnt within 2 days lost the whole plants...I was growing outdoors an got advised it was basic sun root damage... but obvs it's not that your indoors, be good to know what else it coulda been.

Follow my continuous outdoor grow https://forum.grasscity.com/index.php?threads/1354770/

 

Welcome to the city!

 

Getting rid of the symptom (leaves) won't fix the problem?

Try moving this plant off to one side. It looks to me like a reaction to heat or light.

J

** Generally when you see what you're seeing - ie: leaves curled around themselves it is the plants natural reaction/defense to minimize moisture loss as much as possible. I've seen this before often with high temperatures but also with strong LED lighting that was too close.

You aren't running strong LED lighting are you? If so I'd suggest maybe raising your lights just a little bit or moving that particular plant away from the direct light for a day or two to see if that helps...

Cutting off leaves isn't going to do anything but hide the problem though. I'd actually want those leaves in place so that you can tell if the plant is happy - or not...

GL

J

 

Odd situation. Yes, normally they'd all do it - and 400 HPS isn't *overly* strong...

Sometimes you just never know how plants will react to anything - we think we know all about them but that's certainly not always the case.

Let us know how things are over the next 24 hours.

Your RH isn't super low is it?

J

 

This isn't a common problem, I think heat is still the number one suspect. Have you watered with anything unusual recently?
Have you sprayed the plant with anything?
Do you have any pets that could have taken a piss in the pot?

Don't cut the leaves off, they are the things that are going to tell you if you're fixing the issue or making it worse. Cutting the leaves off won't help the plant

All plants are different so if one can't handle something while the others can, it wouldn't be anything unusual. But for a 400w to burn the leaves, it would have to be pretty close

 

Im going through the same problem. But i have alot of varibles i thought could of caused it. First of like going from my house to my garage when its 15 degrees outside. But they was in a box. Next light burn because they was only under a t5 as seedling. I moved them when they had 8 nodes. 3rd is ph which i got the most answers. 4th i would say over feeding. And it could of been the 707 bags i used to transplant into. Gave them the nitrogen toxicity. Any one else want to pick one and tell me what they think. But wither way im sure this is the same thing as the first post.

 

It don't look to bad to me! What are you using for soil or soiless? I can't tell from picks

 

I'm kind of stumped. I think you probably did the right thing with rinsing the soil out. I don't know what it could be. I hope you're able to rinse it out, if that's what it is