Light burn? Or nute burn?

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Bigboxboys

Member
Plant is 26in away from a 450w led so I don’t know how it could be light burn. Most of the tops have yellow tips. Anyone know if this is light burn or nute burn. I’m in ffof and feed 1/2 strength nutes.76648959-63A9-43FF-8476-4CE36450ADE8.jpeg
 
calvin.m16

calvin.m16

Well-Known Member
Nutrient burn, nutrient burn will always start at the upper leaves tips and work its way down & around unless you fix the issue.

I'd stop adding nutrients to the plants FFOF is usually pretty rich stuff.. That plant is way too small to be needing extra food in FFOF.
 
Gorillabilly

Gorillabilly

Well-Known Member
calvin.m16 said:
Nutrient burn, nutrient burn will always start at the upper leaves tips and work its way down & around unless you fix the issue.

I'd stop adding nutrients to the plants FFOF is usually pretty rich stuff.. That plant is way too small to be needing extra food in FFOF.
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Calvin is correct. I rarely need to add nuted nduring veg. OF usually good for 5 or 6 weeks from transplant.
 
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Sonoma473

Member
The plant actually looks pretty healthy. I use nutes with ff also when they are only 3 weeks old without any problems. I think u are worrying a bit to much. Also-is the light ON “red and blue?” I think your lights are to far away from the plants to process the extra nutes properly. Id put them at 18 inches for a week to see what that does as u continue the same nute cycle. I believe that will green them up and make them more robust. They arent getting enough light imo. Here is a photo of the lights value. You shoukd use the 600 watts model and reduce accordingly. Aside from minor yellowing they look good. So again-I believe to little light is the sole issue.
 

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calvin.m16

calvin.m16

Well-Known Member
Sonoma473 said:
The plant actually looks pretty healthy. I use nutes with ff also when they are only 3 weeks old without any problems. I think u are worrying a bit to much. Also-is the light ON “red and blue?” I think your lights are to far away from the plants to process the extra nutes properly. Id put them at 18 inches for a week to see what that does as u continue the same nute cycle. I believe that will green them up and make them more robust. They arent getting enough light imo. Here is a photo of the lights value. You shoukd use the 600 watts model and reduce accordingly. Aside from minor yellowing they look good. So again-I believe to little light is the sole issue.
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I have this same standpoint. I wouldn't continue feeding more if I see burn, I give at least a week in soil but if I'm growing in Coco for example with a more hydroponic feeding style I will get a cheapo PPM pen and start playing with doses on a big or small res. VEG with MOST nutrients you want 600-800 PPM nutrient solution (water + nutes mixed), BLOOM with MOST nutrients you want 1000-1200 PPM nutrient solution.

This all depends on plant size etc. Based on how small the plant is there (looks great, I know its just a young plant) you should not need food for a few weeks in FFOF and when you do feed I'd shoot for half dose because FFOF has some slow release stuff in it. I would honestly quit using Fox Farms and just get coco and feed nutes if you want to use nutes. Idk why you'd use a soil if you plan to also spend money on nutrients.
 
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