hi hope you can help!i am growing in dwc my ppm is 562 my ph is 5.7 and my plants two lower leaves are turning brown and curling up the two tpo sets are a little spotty.i am growing in a pre built cabinet flors are mounted one on each side useing 1200 lums 6500k.what am i doing wrong and how do i fix.thanks for the reply.ps.useing flora nova nutes
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