First grow

I would say to add a little more cal-mag and keep your grow at the same rate or slightly less than previous feed. The coco unless buffered with cal-mag will battle the plant for it resulting in the upper yellowing. The extreme darkening of the leaf almost blue looking is a nitrogen excess. happy growing!

You look to be suffering from a little to much light intensity to fast. I would raise the light back up to where it was last week. The plant is still want to grow while it’s starting to transition into flower. So if you haven’t increased your Cal-Mag I would go ahead and bump it up a tad. The plant will yellow slightly on the tops as well during its transition naturally. It tries its best to grow leafs fast feeling the pressure to flower. Just another way to tell you she’s getting hungry and eating what your giving lol. Happy Growing!

It’s hard to say but it looks like it’s just beginning to stretch to me from your diary.. it’s a haze so it’s likely gonna get tall bro