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Light Stress?

Qutro
Qutrostarted grow question 3 years ago
Yoo Fellows, Can you share your ideas what kinda problem is it? My first thought is Light stress. Can you confirm this? I don’t see any other problem on the lower part of the plant. Only the top leafs getting yellow at the edge.
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Leaves. Color - Yellow
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Mr_Weeds_Autos
Mr_Weeds_Autosanswered grow question 3 years ago
Hey Growmie, When the uppermost sets of leaves are beginning to yellow the first thing is to check for light burn. Tips of leaves will turn yellow when they are getting too much heat from light. Place your hand just above the uppermost leaves, if it gets uncomfortably warm or hot then your lights are too close.
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Organoman
Organomananswered grow question 3 years ago
It is the beginning of nutrient burning from too much nitrogen or over feeding in general, pure and simple.
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Qutro
Qutroanswered grow question 3 years ago
#Mr_Weeds_Autos I will just pull the light a bit up. Hope this is going to help. there was no any sign yesterday and it turned yellow just within a day. Is it possible do you think?
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Qutro
Qutroanswered grow question 3 years ago
# gottagrowsometime. Thnx for the quick response. The light was closer than 48 cm I recognised today, so that’s why my first thought is Light stress. I dare not get any closer the light bro. Also the manufacturer recommends between 48-60cm. #Mr_Weeds_Autos
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gottagrowsometime
gottagrowsometimeanswered grow question 3 years ago
Look at his light distance and model. It's not heat stress man. You are right that is signs of heat stress. You have no water droplet burns, not 1. No droopy leafs, color looks great no blistering and so on. Thst model is very similar to mine very hard to get light burn this early in veg from a mars that far away. Happy growing.
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gottagrowsometime
gottagrowsometimeanswered grow question 3 years ago
Hey, after looking at your light and set up and past grows. I'm more than sure I know what's wrong with your othetwise very healthy and happy grow. It's actually the complete opposite. It's slight light deficiency. Move that light 30cm away from seeding to harvest and at this stage it should be turned up to 100%. Also wouldn't hurt to use a micro if your not? Otherwise your plants are very healthy if it were light stress you'd have droopy leafs and by the time light stress would do that you'd see droopy leafs first. Happy growing, good luck.
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