Light burn and heat stress , if that continues you plant will sadly die ... you need to reduce heat or move you lamp a lot higher even leds need two foot away from a plant if the ppdf is strong ... if this helps please select me for answered question
Recently I noticed some brown speckles on a few leaves. Then suddenly it has progressed. My plant is going into week 10 and the buds seem to be a bit slow to develop. Can any one help me figure what might be causing this issue?
Looks like at least a calcium deficiency. Could be multiple micronutrients be locked out by too much phosphorus. Likely if you're using a bloom booster (like a 0-10-10). Also likely if you're using no micronutrients in your feed.
Looks like you have two deficiencies going on at once, a Calcium and a potassium deficiency, which leads me to believe you have some type of lockout going on.
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