Sudden wilting with new LED

[Skankhunter]

Hi everyone new to page and am pretty much a novice basically I had been using 600 mh and 600 hps with pretty good yields and no nutrient problems....then I've brought a full spectrum 400 w led and done nothing different nutrient wise, veg was going so good I turned earlier than usual at about 4 half weeks then within a couple days one branch just wilt beyond repair, no colour change wilted to nothing in probably 12 hrs yet rest of plant kept going, then couple days later a whole plant done the same, started with 8 down to 2 plants after 3 half weeks of bloom, I'm so gutted, any help advice would be greatly appreciated, as the led was expensive, and I dont want to give up but do not want to loose next crop. Thanks everyone

 

[013]

Hey skankhunter,

Ah cool handle - welcome to 420. No need to give up on the led, but losing from 8 down to 2 sounds like more than just lighting issues. Maybe switch back to hps/mh to finish your grow and crank up the led for your next round.

that’s my 2 cents but more will jump in later

 

[Reave]

I agree that it cannot just be the light. Can you provide some more information and pictures? Medium , feed schedule, how you are feeding(how much run off) What kind of nutes? Anything else that will help others help you.

 

[CO Finest]

Light shock can cause that but with what you are using I would be shocked if that is a case. One thing t try is lift the light as high as you can and see if the plant response to that within the next 48 hours. If so it is light stress. That would be the best way to me too trouble shoot if it is light problem. If it does nothing then like has been said here try going back to old setup to see if that fixes the problem then you will know for sure if it does not fix the problem it is something else. wish you the best take care...

 

[Nunyabiz]

Sounds more like root issues.

 

[Liqurd4tay0z]

Hi everyone new to page and am pretty much a novice basically I had been using 600 mh and 600 hps with pretty good yields and no nutrient problems....then I've brought a full spectrum 400 w led and done nothing different nutrient wise, veg was going so good I turned earlier than usual at about 4 half weeks then within a couple days one branch just wilt beyond repair, no colour change wilted to nothing in probably 12 hrs yet rest of plant kept going, then couple days later a whole plant done the same, started with 8 down to 2 plants after 3 half weeks of bloom, I'm so gutted, any help advice would be greatly appreciated, as the led was expensive, and I dont want to give up but do not want to loose next crop. Thanks everyone

Got an pics to get a better idea of what could have happened?

 

[Skankhunter]

Light shock can cause that but with what you are using I would be shocked if that is a case. One thing t try is lift the light as high as you can and see if the plant response to that within the next 48 hours. If so it is light stress. That would be the best way to me too trouble shoot if it is light problem. If it does nothing then like has been said here try going back to old setup to see if that fixes the problem then you will know for sure if it does not fix the problem it is something else. wish you the best take care...

 

[Skankhunter]

Thanks everyone for your advice, really appreciate it. I've put the hps back in today to try eliminate lighting as an issue, and salvage some sought of harvest.
It's in soil I will add pic of nutrients Ive been using ,same for last 3 grows.
When they first started dieing I thought I had poisoned them somehow so panicked and tried to flush with quite alot of straight water ph at 6.5 ,in doing so I think I screwed myself.
I did notice to soil on top drying out faster than with hps but pooling somewhat in trays.
I'm wondering why it only started when I turned to bloom considering its getting less light ,possibly flooded the roots,thanks everyone, amazing group to find

 

[Skankhunter]

Veg on left ,then introduce bloom on right

 

[PaleSun]

within a couple days one branch just wilt beyond repair, no colour change wilted to nothing in probably 12 hrs yet rest of plant kept going,

If it started with just 1 branch, while the rest of that plant looked fine, I'd be looking for a mechanical cause. Look closely for an insect boring into the stems. If it was soil, water or light, it would have affected the whole plant, not just 1 branch.

Sure hope things work out for you