30 gallon gorilla glue Dwc upwards leaf curl

[Mattcrowe69]

Setup-
4x4 tent
6 inch inline fan
30 gallon Dwc resevoir
600 watt mh air cooled reflector
2 100 watt quantum board led panels
Passive air intake from vents on bottom of tent
1 gorilla glue plant clone from last run
The temps stay around 68-75 with lights on
Ph ranges from 5.5-6.5 and is adjusted daily
I run basic general hydroponics trio and water is changed completely weekly
Not sure of ppm but not very high as I only run 1-1 1/2 ml per gallon
The plant is 4ftx4ftx4-41/2ft tall and is on the last day of week 3 flower. Only some tops of the plant the leaves have started canoeing upward but not to a point where I feel it is hurting the plant just wondering what is causing it and if I should be worried. Has not gotten worse or better for better part of a week. Only that trichomes have started running down the edges of canoeing leaves. It is still budding quickly and appears to be overall happy. Any questions or comments are welcome. Plant is pretty close to lights but have held hand under them and feel no hot spots.

 

[LittleDabbie]

Heat stress from your LEDS being way too close to the tops.. which is whys its effecting the tops..

 

[Mattcrowe69]

Heat stress from your LEDS being way too close to the tops.. which is whys its effecting the tops..

LEDs are dimmed down to 50 percent and heat is not an issue in the tent. Leaf temps measured at 77 during hottest part of the day

 

[H.A.F.]

too much nitrogen can also cause that kind of leaf curl. Usually they are darker green from it though. I think they look fine.

Start looking at it from a "how long do they have to survive until harvest?" standpoint and it will get rid of a bunch of stress You're in the window LOL

 

[treefarmercharlie]

A pH swing from 5.5 - 6.5 is a pretty big pH swing and that could be causing your problems. Don’t forget that a pH of 5.5 is ten times more acidic than a pH of 6.5.

 

[TerpyTyrone]

A pH swing from 5.5 - 6.5 is a pretty big pH swing and that could be causing your problems. Don’t forget that a pH of 5.5 is ten times more acidic than a pH of 6.5.

I'd listen to Charlie!! Ua taught me something!

 

[LittleDabbie]

Wow reminded why i stopped doing forums lol.

Raise your lights up and your problem will correct its self.. Don't listen to me tho idgaf

Try the rest of the advice given in this thread lol

 

[treefarmercharlie]

Wow reminded why i stopped doing forums lol.

Raise your lights up and your problem will correct its self.. Don't listen to me tho idgaf

Try the rest of the advice given in this thread lol

I’m pretty sure everyone here agrees the top of the plants are clearly heat stressed. I mentioned the pH swing because an unhappy plant is going to be more sensitive to an imperfect environment.

 

[TerpyTyrone]

Wow reminded why i stopped doing forums lol.

Raise your lights up and your problem will correct its self.. Don't listen to me tho idgaf

Try the rest of the advice given in this thread lol

Bro.
If I showed ya how close my true 500 watts leds are to my girls.
You'd say they're too close?
No N in flower
6.0 ph in coco/soil 1:3
All gh flora , cal mag, silica, kelp/humic, kool bloom in flower.
Theyre stunted from a gnat colony late in veg.

 

[Old ST1R]

Id agree light stress. Some plants are more susceptible depending on genetics. I’d say try raising your lights 12” if you can. If nothing changes you can always lower them again.

 

[Mattcrowe69]

Will try raising the lights and keeping ph closer to a constant than allowing a swing. thanks everyone for the advice it is all appreciated

 

[Mattcrowe69]

Am going t

Wow reminded why i stopped doing forums lol.

Raise your lights up and your problem will correct its self.. Don't listen to me tho idgaf

Try the rest of the advice given in this thread lol

im Going to raise the lights all advice is appreciated thanks again

 

[Mattcrowe69]

Id agree light stress. Some plants are more susceptible depending on genetics. I’d say try raising your lights 12” if you can. If nothing changes you can always lower them again.

Do you think it could be stress from light intensity vs heat from the light?

 

[Old ST1R]

Do you think it could be stress from light intensity vs heat from the light?

You’ve got a lot of light in that 4 x 4 - 50 watts at the wall per square foot. Lots of guys run only a 600 watt HID in a 4 x 4 and do very well.

Your temps seem reasonable. I’m certainly no expert, but it won’t cost you anything nor will it harm the plants to raise the lights for a few days to see the affect.

 

[inthetrees]

Wow reminded why i stopped doing forums lol.

Raise your lights up and your problem will correct its self.. Don't listen to me tho idgaf

Try the rest of the advice given in this thread lol

Maybe you should stop again.

 

[Mattcrowe69]

You’ve got a lot of light in that 4 x 4 - 50 watts at the wall per square foot. Lots of guys run only a 600 watt HID in a 4 x 4 and do very well.

Your temps seem reasonable. I’m certainly no expert, but it won’t cost you anything nor will it harm the plants to raise the lights for a few days to see the affect.

I wound up raising the mh and putting the quantum boards to better use in a seedling/clone 4x2.

 

[Mattcrowe69]

Bro.
If I showed ya how close my true 500 watts leds are to my girls.
You'd say they're too close?
No N in flower
6.0 ph in coco/soil 1:3
All gh flora , cal mag, silica, kelp/humic, kool bloom in flower.
Theyre stunted from a gnat colony late in veg. View attachment 83603View attachment 83604View attachment 83605View attachment 83606View attachment 83607View attachment 83608

Plants looking good man

 

[Old ST1R]

I wound up raising the mh and putting the quantum boards to better use in a seedling/clone 4x2. View attachment 83778

They look good. Still see some curl there but are you happy with the results?

 

[Old ST1R]

So, how are they doin’?

 

[Mattcrowe69]

So, how are they doin’?

Everything is looking good, did a res change on Tuesday and just been busy working sorry for the late reply. The leaf curl on some leaves has subsided and the rest just appears to be damage done type of thing. I would say raising the lights was the right call. Here’s a pic from today. I also have a purple alien from green point seeds in the veg tent and am still waiting on my dubstep seeds to get here