Is this Calcium deficiency?

simpleleaf said:

The light source seems to have a yellow tinge to it, you might want to post pictures illuminated with natural daylight or equivalent. One thing I'm noting is a dark green color, but it could be the light source skewing perception.

Maybe it's: calcium, magnesium, or potassium deficiency; or manganese, sulfur, or phosphorous excess.

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TheGreenGreek said:

I’m going to be changing to soil. DWC is great and all but seems very sensitive.

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simpleleaf said:

I tried GH Flora nutrients in soil, a friend gave me some to try for free, but I switched away from them. I didn't have the problem you're having, the plants seemed healthy, but my sense was they were not growing optimally.

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TheGreenGreek said:

Need help identifying what this is exactly.

Using 300w Timbergrow COBBs 18-20 inches from plant tops. Using GH flora series nutrients, RDWC with water temps at 68F, pH of 5.8 and tent temps of around 74F, humidity is at a range of 48-51%. Anyone?

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