Hey gang, Been growing for a bit so I have a system. This strain is Chernobyl, photo. Using Ocean forest and Ph perfect M, G, B. Recently the leaves started to yellow. Any suggestions on why?
I would need more details to really diagnose, but assuming your environment, light, and water are good and your pH is between 6.2-6.8, I'd say They look hungry for sure, definitely not over fertilized. I'd go 4-5ml/gal of MGB each. You wan't an EC of like 1.2. If thats to much, dilute to 1.2 or add more of each bottle to get you there.
Nice, ph strips are cheap alternative as well. But I’d definitely add more food too, usually a pH issue looks a little more all over the place symptom wise. That lime green yellow look is hunger