I agree I back of nutes with fresh refill and noticed my timer was stuck in on position 24hours. I'm thinking a little light stress too.I'm a bone head.
I was watching for those nasty rusty spots we all hate. My oldest bottom fan leave have a few small pin size rust spots but no other growth on any other leaves show any signs of calmag.
Roots look perfect and pH has been consistent throughout grow like 5.75-6.0. And I use fresh rain water pH 6.5-7.0 10ppm every time add nutes check ppm and pH and adjust correctly. The leaves did this day after I raised ppm from 350-375 range to 500 ppm range. Think i may be increasing...
Im growing 3 vanilla kush dwc flora duo nuts part a+b 600watt hps ppm 600 pH 5.5 temp 72. Just increased notes past few days from 350-600ish ppm. The largest once healthiest plant is now curling its margins downwards which us to much N it low pH correct.
I'm growing 3 vanilla kush. 600 watt HPS cool tube dwc 4 gallon tub pH 5.75 ppm 550-600 4x8x8 agromax tent great ventilation temp72-74day low60-64nights. Nutes were started off low knowing vk can be sensitive. I let them yellow a lil til they needed N then slowly increased .I was slowly...