Is this light burn?

neutro85

New Member
1. Are you growing from seed or clones?
From seeds, strain "auto jack herer" from zambeza seeds.

2. How old are your plants?
14 days since sprouted

3. How tall are your plants?
about 2 inches

4. What size containers are they planted in?
1,5 gallon since germination

5. What is your soil mix?
Earthworm humus/perlite about 80:20. The earthworm humus informs 1.8 EC and pH 7.0.

6. How often do you water and what type of water do you use?
I use tap water at pH = 6.5 and since the plant germinated in the humid soil, I´ve watered only once because of the size of the container.

7. What is the pH of your water?
About 6.5 (paper strips)

8. What kind of lights do you use and how many watts combined?
42 watt 6500K CFL

11. How close are your lights to the plants? It has been about 1 inch since it sprouted. I´ve checked the temps (always having a 220v cooler) of the space just above the plant and it has been about 80F, lowering sometimes to 72 and reaching a maximum of 89 for short periods.

12. What size is your grow space in square feet?
1,5x1,5 ft with plenty of air circulation

13. What is the temperature and humidity in your grow space?
Between 72 and 90F at most, and about 30-50% humidity.

14. What is the pH of the soil?
Haven´t measured it, but I know the perlite is neutral and the humus is labeled 7.0. Tap water has pH = 6.5

15. Have you noticed any insect activity in your grow space?
No.

16. How much experience do you have growing?
Not much. I could say it´s my 2nd grow.




So, my worries are about the pale strips on the leaves, the curled up edges, and the crispy texture. Doing some research I thought it could be light stress (I don´t know about heat stress because my temps aren´t that high, are they?), but it seems unlikely using a 42 w CFL, right? Anyway, I put the lamp at 3 inches distance now to see what happens. Otherwise the plant is growing at a good rate for being 14 days old since sprouted.

Any suggestions? Thanks!!!

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AimAim

Well-Known Member
Any clue on what it could be then, AimAim?
No, not really, there's a couple dozen pictures a day posted just like that. It looks like nothing to worry about to me.

If I understand your description you are growing in 80% earthworm castings and perlite? Not sure I have heard of that ammt of castings.....
 

neutro85

New Member
Yes, I´ve decided to use a high % of earthworm casting and see what happens since I´ve read that you can´t burn the plant with too much of it, my idea is to fertilize as less as possible. Plus I have a high percent of perlite and the mix looks very airy as well.
 

spliffbuddy

Active Member
PH your soil, I had some hot soil on my last grow and they looked similar. Cant think what else it could be, they don't look heat stressed to me or over watered but try to keep your heat down, it wont help in the long run. They look as if they are growing ok though. What's your air flow like and is it directly on the leaves although I wouldn't think it would be this either.
 

neutro85

New Member
Well, about the soil mix, I had my doubts too on using so much earthworm castings, but I decided to give it a try since the commercial soil mixes you can get here are VERY low quality.. plenty of bark on them especially. But it may be that the soil is too hot as spliffbuddy suggests (even if I´ve never read of a too hot soil due to too much earthworm castings). The airflow is a 220v cooler half foot away from the plant. It is directed on the leaves. The plant is growing at a good rate, the only problem are the strips and the crispy leaves. I think I´ll just keep the lamp at 3 inches now, and try to keeps the temps at max 80-82 F and see what happens on the next nodes to come..
 

Cpappa27

Well-Known Member
Get a soil PH meter probe they are about 15-30 bucks depending on what you want. It doesn't look overwatered in my opinion but it does look light heat or light stress. Keep your temps down to about 75-80 and make sure the light isn't too close. I would also maybe give them a few hours a day with some dark down time. Some strains don't respond well to constant 24 light. Try maybe 20/4 and right when the lights go out try misting them with plain water, not when the light is on though. Good luck.
 

keysareme

Well-Known Member
I will just add in another say for checking on heat stress and the pH of your soil. You can always flush your soil with bone meal and that will bring its pH back in balance. You would want an 0-10-0. Liquid bone meal.

Also I would say for sure to move the current light back a few inches at least.

I just got the temp dialed in for my girl over here. She was in undocumented temperatures for nearly 12 days. Did well until I made a few bad choices one of which was to increase the light and though the increase in the amount of light is ok (I added a 105w 2700k cfl) the increase of the already high temperatures was not.

Anything above 85 I've found will definitely stunt growth and cause obstacles. When I ran the thermometer with all the lights she had for those 12 days the highest peak was 96. I've been recalibrating with different light combinations and found a good blend spectrum of led/cfl with a temp of around 79 and humidity (a little low to me) at 50 & after just two days of proper temps she is showing great full growth again.
 

tikitoker

Active Member
I will just add in another say for checking on heat stress and the pH of your soil. You can always flush your soil with bone meal and that will bring its pH back in balance. You would want an 0-10-0. Liquid bone meal.

Also I would say for sure to move the current light back a few inches at least.

I just got the temp dialed in for my girl over here. She was in undocumented temperatures for nearly 12 days. Did well until I made a few bad choices one of which was to increase the light and though the increase in the amount of light is ok (I added a 105w 2700k cfl) the increase of the already high temperatures was not.

Anything above 85 I've found will definitely stunt growth and cause obstacles. When I ran the thermometer with all the lights she had for those 12 days the highest peak was 96. I've been recalibrating with different light combinations and found a good blend spectrum of led/cfl with a temp of around 79 and humidity (a little low to me) at 50 & after just two days of proper temps she is showing great full growth again.
Not trying to be a dick, but you really need to stop telling people to flush with bone meal.
 

Sand4x105

Well-Known Member
Your light is fine, that is N toxicity, and it will not get better....
Your medium is way over N, and it will be what you did....
I had my doubts too on using so much earthworm castings, but I decided to give it a try since the commercial soil mixes you can get here are VERY low quality..

Your doubts were correct, and now you can say you have figured out your issue....
You caused this problem with your worm casting....
Have you ever heard: "Too much of a good thing" ????
That's what you have....[I have had exact issue, when I added too much bone meal/Veg Tone to plants soil mix-I always mix my own]
Good luck trying to fix....
 

tikitoker

Active Member
Well, about the soil mix, I had my doubts too on using so much earthworm castings, but I decided to give it a try since the commercial soil mixes you can get here are VERY low quality.. plenty of bark on them especially. But it may be that the soil is too hot as spliffbuddy suggests (even if I´ve never read of a too hot soil due to too much earthworm castings). The airflow is a 220v cooler half foot away from the plant. It is directed on the leaves. The plant is growing at a good rate, the only problem are the strips and the crispy leaves. I think I´ll just keep the lamp at 3 inches now, and try to keeps the temps at max 80-82 F and see what happens on the next nodes to come..
casting will never burn your plants, however you can add too much and make the soil muddy. so if your gonna use shit load of poop, you have to have extra drainage.
 

neutro85

New Member
"Your light is fine, that is N toxicity, and it will not get better....
Your medium is way over N, and it will be what you did....

I had my doubts too on using so much earthworm castings, but I decided to give it a try since the commercial soil mixes you can get here are VERY low quality..



Your doubts were correct, and now you can say you have figured out your issue....
You caused this problem with your worm casting....
Have you ever heard: "Too much of a good thing" ????
That's what you have....[I have had exact issue, when I added too much bone meal/Veg Tone to plants soil mix-I always mix my own]
Good luck trying to fix...."


Well, it does look a slightly darker green than other plants (although not the black/dark green as I´ve seen in other pictures of N toxicity), but it doesn´t have "the claw", and I haven´t heard of crispy leaves as a simptom of N toxicity either.. anyway I think you may be right..
 
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