Sour Diesel (RQS) under SF1000

Hi dude! It’s normal. Feed your water with o2 using fish tank equipment and all issues disappear if do not overdose nutrients.

Possibly but I believe it's related to your ph. Because you're growing in soil I would try to bring it up to around 6.5 and I bet you'll see that yellow fade away and she should get a better shade of green. Hope this helps.

defoliation implies removing many leaves at once which (as you mentioned) is stressful. At this point I wouldn't remove any leaves especially because your leaves aren't hiding any nugs underneath them. If you still want to remove leaves I would remove 2 at one time and wait for the plant recover before removing any more,that way you won't be causing too much stress. Also, prioritise the leaves that look unhealthy (which you dont seem to have at this point)

Just abit of nute burn mate, I'd drop the micro as that's just pure nitrogen, you'll have more than enough in the grow to see the lassie through, then you will be able to up the bloom a wee touch also.