Marking on fan leaves. 4 week in flower. Help?

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Harryp1990

Member
Got 2 plants. In a 60x60x100 tent. 4inch fresh air intake fan and 6inch outtake fan through filter.
Got a 600w digital and was running at 400w but turned upto 600w 2 weeks ago and has been fine and temp average 29 day and 19 at night.
What are these marks? Is it a burn from the light? I did think it might be pushing to run 600w in that space..?
 

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Bear420

Bear420

Well-Known Member
Hi Harry,
I don't think it is a light issue, unless you happened to get some water on the leave in that spot.
look real closely under the leave and see if you notice anything. I don't see any discoloration on lower leaves, and no burning on top of the flower so I really don't think it is a heat issue. I know I've burned mine by leaving some water on a leaf and it burned, because I had my fan off it did burn it.
So not sure if that is your problem or not but I sure didn't see any def. just keep a close eye on things you should be fine. They look good. keep up the good work.


Good Luck Harry.
 
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Harryp1990

Member
Pretty sure no water would of got up there mate! I have turned light down to 400w atm. Un sure whether to Carry on feeding as normal :/
Thanks man
 
Bear420

Bear420

Well-Known Member
You could lay off the feeding for a few days and see what happens, the only thing I was thinking was the burn from water because they look really good other than the one spot.
I was wondering are you using Cal-Mag at all ?
But I really think it was just some freak incident that should be fine.
 
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Harryp1990

Member
I am using green planets medi one 4 3 3. And slowly introducing atami bloombastic. I am a bit of a newbie it is only my 2nd grow. My first one was not great.
 
Bear420

Bear420

Well-Known Member
Well it looks like you're doing a good job, I been using 1,3,2, for years, and hardly ever have any issues, in flower chamber, and 2.2.2 in veg and seems to be less of a problem than every other thing I have tried, and I've tried lots of stuff.
 
Dynamo626

Dynamo626

Well-Known Member
looks like the uv burn ya get on seedlings if there not hardened in. im using a 315 cmh in a 3x3x6.5
thats a 550w equivelent in hps, no problems. there is no interveinal chlorosis on any other leaves so doubt its cal. the necrotic leaves arnt the right color for mag.
 
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Harryp1990

Member
Dynamo626 said:
looks like the uv burn ya get on seedlings if there not hardened in. im using a 315 cmh in a 3x3x6.5
thats a 550w equivelent in hps, no problems. there is no interveinal chlorosis on any other leaves so doubt its cal. the necrotic leaves arnt the right color for mag.
Click to expand...

Thanks man what do you advise I should do ?
 
Bear420

Bear420

Well-Known Member
At 22 inches is certainly isn't burn from your light, but something weird happened.

I posted a pic of mine you can see some yellow but that is just because they're almost done.

Like I said my light is about a foot away.

Keep us post on your progress....
 

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Dynamo626

Dynamo626

Well-Known Member
Bear420 said:
At 22 inches is certainly isn't burn from your light, but something weird happened.

I posted a pic of mine you can see some yellow but that is just because they're almost done.

Like I said my light is about a foot away.

Keep us post on your progress....
Click to expand...
purdy!
 
Dynamo626

Dynamo626

Well-Known Member
Dealing-With-Light-Burn-On-Marijuana-Plants-720x480.jpg Your plants look tasty. Still say its light damage. 1 foot is close but not totaly unreasonable. Bet they are not one foot away and one day you just up the wattage 33%
 
Dynamo626

Dynamo626

Well-Known Member
I would. Lil light damage isnt to bad and ya dont wana fight that and a dificiency. But then i have no experience with sinthetic nutes. Im organic
 
Dynamo626

Dynamo626

Well-Known Member
More watts is more at harvest. If heat and humidity are under control i would go back to the 600 but i do understand being gun shy! When i go from veg to flower i put my light at max height and let them grow up to the light (abought 4 feet over them) then when the strech is over if i need to i drop to 20 inches ( i judge the strech well and usually only need to drop the light 6 in to a foot)
 
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