Leaves

This looks like a lower leaf— and normal for the most part. Looks like possible thrips with irregular feedings making the leaves crispy from over watering…. The purple can be from temps or deficiency. I wouldn’t worry too much if this is just on the lowers—- defoliate and move on

Seems like some Nutrient Burn as well as Natural Plant Fading that happens towards the end of their lifecycle like when the leaves change in the fall … hope this helps and feel free to send me a message if you need further help

The purple, is fade. Happens sometimes with strains when they reach flowering. Can also be P, (but I don't see any purple stems, so I'm putting it down to fade) And as for all the bogey looking growth. As said below. You have a pest issue, and a bad one that's messing with your uptake and so on. Also.. chill on the feeds your soil is way too hot. Your growing in soil. Fish mix is a soil condintor and also, FULL OF NATURAL SALTS, so you have to go easy on that stuff. And try not feed in conjunction with other feeds. Break it up a little. Good luck

Hello! First of all, I would say there is some aphid/red spider mite under the leaves (notice the small white dots above the leaf). Then I would say that, looking at the scorch marks and the purple that is forming on the leaves, there is a phosphorus deficiency, probably caused by the wrong pH (too high) Do a drain water check for pH in soil the best is 6.5-7. for sure your tap water has 7.5-8 :) Happy growing!