How To Figure Out Plant Deficiency!

Deficiency chart.
loudclouds.co/plant-nutrient-deficiency-chart/
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Just last night I received a Cookies strain that needed some TLC, long short story short my friend works for an THC extraction company. He got a promotion and no longer had the time for his plants.
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When I'm inspecting my plants first thing I do is try to identify all the problems on the plant.
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Then after I come to a conclusion, I work on a solution to fix the problem.
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What I came up with is the that these plants have a major PH Problem. Which is causing nutrient lock and causing the plants to show multiple signs of nutrients deficiencies.

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