Need help with some sort of deficiency..

DWC enthusiast

Active Member
Wow hopefully it is an easy fix then!! Thank you for the input, sir.

I am glad to hear the LEDs are that strong, hopefully at the right distance I can get some good yields.
You want to find the exact height it starts to cause problems then keep it just a little further away then that throughout the entire grow for best yield. Also reflective material around your plant to get some of the wasted light put to good use if not already being used
 

Budzbuddha

Well-Known Member
Light burn , give some distance try 18" , let your plants stretch a bit.
And let air move across canopy.
 

PlantsAreNeat

Well-Known Member
Light burn , give some distance try 18" , let your plants stretch a bit.
And let air move across canopy.
Thanks for the input! I have got the LED panel about 18-20 inches away now and have a fan blowing air around in a circular rotation that hits the plant for a second when it is turning but not directly blowing on it the whole time.

Hopefully she starts to do better soon!
 

PlantsAreNeat

Well-Known Member
Hey guys question, I am getting ready to water her and am wondering if I should cut off those curled, wilted, burnt-up leaves? Or just leave them on?

Thanks!!
 

DWC enthusiast

Active Member
Hey guys question, I am getting ready to water her and am wondering if I should cut off those curled, wilted, burnt-up leaves? Or just leave them on?

Thanks!!
Leave them unless they are 100% dead imo. if it's still alive it's still converting light into food for your baby
 

PlantsAreNeat

Well-Known Member
Leave them unless they are 100% dead imo. if it's still alive it's still converting light into food for your baby
Thank you for another timely response, sir! No they are definitely not fully dead, in fact the part of the leaves that are not burnt and wilted and very bright green. I will keep them on and give her a good watering!
 

ÉsÇ420PoT™

Well-Known Member
Hey guys, a little background first I guess...

Second time ever growing, first one was fairly successful, maybe just luck, but this time around I am starting out pretty rough and by no means an expert.

The strain is indoor White Widow, potted in Fox Farms soil, with a 300W LED full spectrum panel on her, and she is just a few weeks old. The lighting schedule is 18 on and 6 off.

The new leaves seem to start out very nice looking, then as they grow there seems to be some serious cupping upwards along with brown and yellow tips that eventually spreads to over the whole leaf. I can try to give anymore information that is needed to anyone with some knowledge on what is going on.

I posted pics to show.

Thoughts? Ideas? Help!! :)
I know theres many posts past this point, but I just have to tell you right now, from the pictures here, this is not a deficiency... This is heat stress and the bulbs burning your leaves.. I mean sure, I'd up your intake of nutes as they are a bit tealish in color, but that upward cupping / burning situation, is from your lamp...
 

PlantsAreNeat

Well-Known Member
I know theres many posts past this point, but I just have to tell you right now, from the pictures here, this is not a deficiency... This is heat stress and the bulbs burning your leaves.. I mean sure, I'd up your intake of nutes as they are a bit tealish in color, but that upward cupping / burning situation, is from your lamp...
Thank you for your input.

It may sound crazy, but that actually makes me feel better. I guess since I know we have pinpointed the cause. In your opinion, is that why the leaves are still so small at this stage?

I have already noticed the leaves cupping upwards less from just moving the LED panel up to 18" or so and turning back to a normal "stance." I am sure this will get even better with time. Now I just hope the leaves grow quite a bit as well, because she is actually pretty bushy.
 

ÉsÇ420PoT™

Well-Known Member
Thank you for your input.

It may sound crazy, but that actually makes me feel better. I guess since I know we have pinpointed the cause. In your opinion, is that why the leaves are still so small at this stage?

I have already noticed the leaves cupping upwards less from just moving the LED panel up to 18" or so and turning back to a normal "stance." I am sure this will get even better with time. Now I just hope the leaves grow quite a bit as well, because she is actually pretty bushy.
Yes, heat stress severely stunts the growth of cannabis. It could as well be some other variable things, but from what I can see, this is my "estimated guess". My rule of thumb, is I higher the lamp to a certain distance, put my hand right above the tops of your highest bud site,(palm side down, so that the top of your hand is facing the lamp.) and if its burning your hand, then it's to hot/low for your plant. (of course you can tweak this a bit if you have an air controlled hood and a nob to fluctuate the air intake) however, regardless, if it's burning your hand, it's all bad for your plant.
 

PlantsAreNeat

Well-Known Member
Yes, heat stress severely stunts the growth of cannabis. It could as well be some other variable things, but from what I can see, this is my "estimated guess". My rule of thumb, is I higher the lamp to a certain distance, put my hand right above the tops of your highest bud site,(palm side down, so that the top of your hand is facing the lamp.) and if its burning your hand, then it's to hot/low for your plant. (of course you can tweak this a bit if you have an air controlled hood and a nob to fluctuate the air intake) however, regardless, if it's burning your hand, it's all bad for your plant.
Well see I actually think that is where I got myself in trouble as I am growing with a 300W LED Panel, and even at a couple inches away it never felt "hot to the touch" at all frankly. But it sounds like that panel is throwing down some serious rays on the canopy enough to hurt the plant. I will take some pics soon after a couple days of the lighting at a higher level.
 

DWC enthusiast

Active Member
:shock: Holy shit man! That's TOO MUCH light! You should treat your 300W LED panel like a high quality 1000W HID!
too much light yes the second part is debatable. I wouldn't think a 300w LED has the optimum light range of up to 32" away like my 1000w HID. I'd say its more like a 600w HID
 

PlantsAreNeat

Well-Known Member
Hey guys here are some updated pictures after about 48 or so of raising my LED panel up to about 18-20" above the plant.

I feel like they are a bit stunted for one reason or another and that the leaves should be much bigger, but I may be wrong...

Some of the upwards cupping of the leaves is still there which I thought would go away from raising the lights up away from the plant and cooling the area down with a fan, but I just am not sure now.

As usual any thoughts/comments/criticism are welcome. Thanks guys! 20150416_093926.jpg 20150416_093941.jpg 20150416_094002.jpg 20150416_094017.jpg
 

DWC enthusiast

Active Member
Leaves that are cupped or damaged will not come back healthy. You just have to wait for new growth (stuff that didnt even exist before you moved your light up) to see how she comes back. i know it is hard but be patient she will come back
 

PlantsAreNeat

Well-Known Member
I hope you arent feeding your plant those cheez-its
LOL sir, those Cheez-Its are mine, and those are the breakfast of champions!

I guess I just gotta play the waiting game then and hope she gets better.

I do have a question about the pot she is sitting in. Is there a chance the container could be too big? Is that ever an issue? I am also wondering if Black wasn't the best color to go with because of how it holds heat from the lamps so easy. I do have a terracotta color 1-1.5 gallon new container and a fresh bag of Fox Farms soil. Is it worth replanting her in a brand new container with new soil to see if it helps her take off at all or just stay the course?

Thanks!
 

DWC enthusiast

Active Member
LOL sir, those Cheez-Its are mine, and those are the breakfast of champions!

I guess I just gotta play the waiting game then and hope she gets better.

I do have a question about the pot she is sitting in. Is there a chance the container could be too big? Is that ever an issue? I am also wondering if Black wasn't the best color to go with because of how it holds heat from the lamps so easy. I do have a terracotta color 1-1.5 gallon new container and a fresh bag of Fox Farms soil. Is it worth replanting her in a brand new container with new soil to see if it helps her take off at all or just stay the course?

Thanks!
The container being big isnt a problem as long as you don't water too frequently. roots need air so make sure they get it between waterings (let the pot go dry but not so dry the leaves wilt and you're good) having a big pot will allow faster growth although keeping them in smaller pots while young can cause shorter, more controlled growth with less space between nodes but i wouldn't transplant to a smaller size I'd say wait until the plant can go to a bigger container if anything. Coming out of heat stress you dont want to risk stressing it again
 
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