Necrosis? And red stems?

So I posted here at a earlier time with plants that had yellowing issues, added the nutes recommended and it didn't help so my second option was to flush my 1st plant, It wasn't completely clear water when I finished I figured it might leave some nutrients in it. So i guess this may be where I messed up? After flushing, i left it for te ngiht and I woke up the next day to find that I had brown spots all over my leafs from top to bottom. So I believe my plants on its last bit of life before passing on to the giant bowl in the sky. Any quick ideas how to save this fella?

And my 2nd plant has red stems on the fan leafs that causes them to droop, but no other signs of problems. New growths sprouting up just fine.

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You can see in the back too how the other fan with the red stem is drooping

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This is happening all over the plant, new and old leafs.

what medium are you using? I would adjust the ph to 6.2 to better absorb the potassium you do have left which is in my opinion the cause of the red stems. The spots are more troublesome, they were not there yesterday? Just start to cover bases, spray neem, raise ambient temp, lower humidity, check for parasites, foliar feeding (iron, sulphur, Calcium, magnesium)..epsom salts have the mag and the Sulphur and also stall viral and fungal growth when sprayed. Also if you have it, use a root zone conditioner(Zone by dutch masters is great.) Your roots might be rotten and an aggressive dose of zone or Hygrozyme will put the brakes on that. By the looks of it, you can save these. You flushed them into shock perhaps...add 1/2 strength nutrients or more maybe. If you use a silicate Pro-tekt, sil-pro break it out. B vitamins, If you dont have a root zone conditioner try beneficial bacteria and fungi. They do wonders to combat pathogens in the root system as well as optimize nutrient uptake and are like steroids for the roots. If you arent using them already....I strongly advise you check em out. I know it sounds like a ton of shit to do all at once but you dont have time for half-measures. The spots look fungal, my guess is it is water related. If using containers, you can take a skewer and poke into the soil to aerate and perhaps use a more powerful fungicide (Sulphur, potassium bicarbonate (green cure)) baking soda and water works pretty well, just dont use any of these if you have used any oil based sprays on the leaves in the last 4 weeks. They will bounce back.

let them dry out completely...feed em by spraying. Let me know more details and perhaps i can be less broad.

okay I will look into this first thing tomorrow. They are in the night cycle atm, till 8am anyways. Im using Miracle Growth moisture control as the soil, I did tests a few days before the flush of the bigger one and the soil ph was a neutral and it said Nitrogen was off the charts. I do have nutrients to mix in the water when it dries out and i also have that over time plant food you sprinkle on. only difference is that the non liquid one has calcium in it. so what would you recommend? they both have a good balance of N, K, and potash. Ill aerate tomorrow and knock up the temperature. The red stem is showing its sex and its female, but i guess the other will probably be delayed due to this shock huh?

I didnt flush the Red stemmed one, i was hesitant and now im pretty happy I didnt :)

Ive poked holes in the soil as best I could, even stuck a dehumidifier and separated it from the other and have high heat going hoping to dry the soil. I started spraying the leafs but the next day over 50% had turned brown so ive done some serious trimming. Also the top snapped off, it was hollow so im not sure if that means anything. Here is what it looks like now. what do you think?

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Are there any drainage holes in the bottom of the bucket? Moisture evaporates up so air intake needs to enter the soil from the bottom of the bucket.