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Do these random spots mean nutrient burn/deficiency, or is this normal?
CRIM_mirstarted grow question 4 years ago
I have been feeding my plants 1/2 strength FF once weekly since week 3. The plants seem to be doing well. One has twisted leaves but seems healthy. But the plants are displaying random spots of yellowing. Is this normal or indicative of some kind of nute issue?
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JoseTodoLocoanswered grow question 4 years ago
You had the TDS at 2250ppm to me it's too high, sometimes those spots are related to drops of water that acts as a magnifier, Are you having those spots on a few lower leaves?. Cheers
CRIM_miranswered grow question 4 years ago
Thanks for the answers! At least two of the FF micronutrient products I use contain potash (e.g., Microbe Brew, Boomerang). Over the last week, the spotting has gotten worse, and now the lower leaves on my control plant look like they have a serious calcium deficiency. I fed them full strength micronutrients today, including CalMag Plus. I am hoping this helps.
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dauntlessanswered grow question 4 years ago
Look healthy to me, I am about to finish the same strain and your plants look better than mine did at same age! Check under leaves for any critters. Ceylon Cinnamon (or any) will help control pests if sprinkled onto soil. AG biowar helped me a lot. Make sure you have some beneficials going, I am using https://ogbiowar.com/ flower pack and it eliminated almost entirely all the fungus gnats that were there. I would add them before you pre-flower and flower. Also diatomaceous earth will keep any bad guys away during flower. They look like they are getting ready to flower to me. I would clear some of the leaves with light, careful defoliation. Peace!
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JoseTodoLocoanswered grow question 4 years ago
Btw, I see you are adding Calmag so looks like that's not the issue. Are you also adding potassium?
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