yellow leaves downward tips

Tugg said:

Hi to all! I have a problem with yellowing leaves, downward turning leaf tips and red stems. Details are

Strain - sherbet cookies
Lights - 600 W Fluence LED
Nutes - Botanicare Pure Blend Bloom at label strength (currently 25 ml/gal),, CalMag 3 ml/gal, Liquid Karma at 5 ml/gal. nutes used every 3 days mixed with pH'd RO water in soil
Week 5 of flower.
Growing 8 plants and all have red stems, but only half of the plants are showing these signs,

I saw these problems with my last grow of this strain, and added CalMag without much success. View attachment 4956364View attachment 4956365View attachment 4956366

Any ideas, suggestions would be appreciated.

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