#sick plant

Hello This is my forst time growing and i'm currently growing two, the first one is doing mighty well and the second looks a bit well, dull. It's leaves started being a lighter green over the past week and now they are canoeing, tried figuring out what it could be to no avail, wondering if...

Under 400watt mh Coco perlite 28lt air pots Green planet nutrients following chart I don't use a ph pen or cal mag. Others are perfect, 1 is sick and slowly getting worse.

Ok I started outdoor grow had issues fixed it so moved indoors to tent to extend veg to help. I moved em back outside cause they got to big when they entered flower. All 3 in flower are showing nute issues 2 aren't bad and I believe I have sorted out. The 1 furthest in flower is showing issues...

Ok I got a kinda ok 3in1 meter online n I tested it. Seems ok as far as readings. I noticed ph of soil is about 7.5 I know way too high. All but 1 plant seem fairly healthy. All show some signs of over watering which I can't help been weeks of rain. 1 has a leaf that's just dieing and being...