Damn that is truly beautiful @DollarBill. You have some made skills my friend. You inspire me to not to worry and just try new things, it’s only a plant, well kinda. 
Temps been around 73 to 75 humidity 45 to 55 only thing I haven’t done is use my flower fuel but I ordered a new ph meter should be here tomorrow mine disappeared but as far as the ph its always been between 5.8 to 6.4??
this is what I use
@Hippy1978 no clue bro, i’m so busy i can’t stop and scratch so ask @MDBuds because yours look good to me
First question…what has happened 2 days / 3 days ago…
change in nutrient? Temp? Additive’s, Amendments? Foliar spray?
Veg growth is off the charts from when you showed the re-veg. I do not see Yellow between the veins, but looks like Magnesium / Manganese issue, usually a result of a Ph imbalance. If so, leaves will NOT RECOVER so defoliate them. It DOES look like Ph fluctuation (to me, but I have been, can be wrong).
Phosphorous issue will ALSO give a similar result. If “N” IS TOO HIGH, IT WILL LOCK OUT P&K.
As usual, check for mites
Lastly…root rot…comes with overwatering or not enough O2 in the soil. Aerate 24 hrs min before feed/watering.
Lets see what you can come up with as last 2-4 days that changed…
PS - you can defoliate little more. Check out @MDBuds YT video on trim, lst
Thank you! 
Ok, only thing I haven’t done was use the flower fuel which is high in P K thats its
Legit question: Why would it not be because she can’t breathe?
This is how it channels through my thought process: If you look at rust, rust does what? It eats at something right? Caused by? Too much iron and what else? Too much iron is caused by what, @MDBuds ? Too much mag? Mag excess is caused by too much bicarb, right? Bicarb is caused by potassium pushing into the channels and/or calcium? @Mrb53004 ? If I am wtf off the ride, please advise.
Y’all will have to bear with my stuttered thinking at the moment as I just had a oddly weird thing occur and I have to come down off the adrenaline rush of it, I will explain when I can once the effing laughter sets in. I appreciate you.
I have no clue what you said sounds legit, im new to growing so I ask yall professionals @kmac03
That’s why I recognized the need for a higher level of care, My Friend. I want to tell you to defoliate some, but I don’t have as much experience as they do and they advised differently. 
I also have Flower Fuel on my shelf. 
As far as I know
oxidation - in which iron reacts with water and oxygen to form hydrated iron (III) oxide. Essentially, the metal is naturally returning to its unrefined state. … Because iron and oxygen have opposite charges, they gravitate toward each other.
Oxygen causes these electrons to rise up and form hydroxyl ions (OH). The hydroxyl ions react with the FE⁺⁺ to form hydrous iron oxide (FeOH), better known as rust
Magnesium has a protective coating on it to prevent corrosion. Salts, break down the protective coating. Magnesium doesn’t technically rust. Rust is only the corrosion of iron or steel
However, magnesium does corrode very quickly. Unlike the reddish brown rusted surface of iron corrosion, magnesium corrosion is actually more of dull gray film
Chlorides, bromides, iodides and sulfates normally accelerate the corrosion of magnesium in aqueous solutions. Practically all heavy metal salts are likely to cause corrosion since magnesium normally displaces heavy metals from solution due to its high chemical activity, except iron phosphate solution
When magnesium reacts with oxygen, the magnesium atoms donate electrons to O2 molecules and thereby reduce the oxygen.
Magnesium therefore acts as a reducing agent in this reaction
One is the increase of O2, the other is the decrease of O2…that is what the Bicarb does
I do not know enough Chemistry or similarity between Potassium in the body to make an educated assumption of your comment
In other words…I DON’T KNOW…never mind