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What are these yellow/brown dots and how can I prevent more from developing?
sbgrowstarted grow question 3 years ago
Yellow/brown dots appeared midway through week 4 of flowering. More prominent on upper fan leaves. Gave it nutrient tea (flower nute/worm casting/CalMag) so hopefully that will help. Can’t test pH so difficult to tell if it’s lockout. Added new 600W light this week too.
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Organomananswered grow question 3 years ago
Definitely a calcium deficiency.
It is not "lock out".
It is not caused by your new light.
The old damaged leaves will not recover, but the newer leaves should stay ok if you have upped the cal/mag.
You also need to ease up on the nitrogen/feeding, the leaves are very green.
Excess nitrogen during flowering can cause loose leafy buds and diminish trichome production.
Hope this helps, Organoman.
Mr_Weeds_Autosanswered grow question 3 years ago
Hey Growmie,
Since you haven't been able to check it, I would lean toward this being a lockout, ph is very important to the plant intaking nutrients. I also noticed the humidity is really low, along with the temp being close to 90°F degrees, these things also could be playing a factor in whats going on with your plant. Feel free to shoot me a holler if you ever need any help, I'd be honored to assist you. Hopefully, this was helpful, and remember ... "Happy Growing" and "Free your mind one puff at a time".
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Robertsanswered grow question 3 years ago
It is a calcium deficiency. Can test runoff to get ph of soil or substrate
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