I haven't done that because nobody has told me to. Everything I read says something different about growing in coco so I decided to use the GH recommendations. Every time I ask online I get a ton of different answers and i'm never sure which is the right thing to do. It's really hard to be a novice and try to learn this way. How do I know which advice is sound? Which methods to use?
So are you saying I should just be using part B, nothing else, and feeding every day? How much per gallon? Why?
Doesn't the yellowing and chlorosis mean I'm not getting enough Nitrogen?
I haven't ever run straight water through them. I've fed with every watering since they reached the vegetative phase.
That's true I forgot about that. I never know who to believe either I have about 50 grows in soil and am doing my first grow in coco. I have the time so I spent the last 4 months reading not hundreds but thousands of pages on this forum and others about growing in coco so I don't screw up.
I can tell you after the coco is charged in the beginning with cal mag and then you start running base nutes that contain calmag (like you are) that you don't add even more calmag from a bottle every feeding
Your Part A is 5-0-6
Your Part B is 1-5-4
According to the feeding schedule you should be at 1 Tsp of A and 2 Tsp of B per gal at 3 weeks into flower, right?
Don't worry about lower leaves not getting any light that are turning yellow. I would quit with the calmag if you are going to keep giving them A and B.