I am new to growing and having some issues. I have only been growing Morrocan kush, but just recently decided to grow multiple strains. I also just switched to General Hydroponics 3 bottle system and CMH lights (was LED). I am having my plants slowly turn yellow at the ends and eventually to what you see below. I thought it was a magnesium deficiency, but after giving them some cal-mag it is still getting worse. It only seems to be on the tops leaves. My lighting is at 50k lux, the heat stays around 75, and 50% humidity.
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