Iron is critical for the processing of chloryphyll.
top leaves yellowing but not the bottom leaves? Leaves that do more photosynthesis need to replenish chlorophyll at a higher rate. When a medium becomes oversaturated, especially soil, iron can become unavailable to plants due to chemical changes that lock it into forms that are difficult for roots to absorb. Iron uptake is significantly affected at a pH above 7 because high pH causes ferrous iron (Fe²⁺) to oxidize into ferric iron (Fe³⁺), which then forms insoluble ferric hydroxide, making it unavailable for absorption.
Oxygen, oxygen, oxygen, nothing good can happen in a soil that doesn't have oxygen, a pot that big will require strong negative pressure to ensure moisture is being moved within an adequate timeframe, very easy with a pot that big to have dead spots, in nature oxygen is diffused via high and low pressure fronts, in tents indoors we don't have those, so we create them through negative pressure, vital for big pots.
Look like you are feeding lots cal mag every week, far too high RH%, she isn't able to move water or respire as well as she wants, causing a backlog and potential pH skew, tips starting to burn meaning salt capacity reaching limit, fairly sure you used organics so hard to measure how much nitrogen you still have breaking down in there, that could also potentially skew ph over 7.
Feed her some carbon sugars, P and K after you get her pH sorted, Iron lockout, but there is probably lots of iron available, you need to get your RH under control and get water moving in that tent, especially with such a big canopy.
Gluck.