AK48 under 250W HPS Looking for a Dr. Check Up w/ lots of Pics

I lost my journal and most of my posts. Wanted to some opinions on my girl. If any of you remember she has had a rough time. She staerted looking better after I added more nutes/CalMag and finally got the temps under control.

Some general info:
AK48 from Nirvana from seed
Growing in coco/soil mix
In a 5 gallon bucket
Temps stay 72~82 and average 77
250W HPS was @ 3" just moved to 6" above canopy
Day 46 of grow 19 of light flip
Using Jack's Classic every 2-3 days with (50:50 RO/distilled water), just started using bloom a couple days ago.

Observations:
Had lower leaves yellowing which I think was a N def, hasn't gotten worse but did damage some lower bud sites.
The cola leaves look yellow on the perimeter, I think its light bleaching? The middle sites buds look good.

If I need to take more pics of something specific please let me know. What you guys think, what I should do next? I'm leaving the damaged stuff as a sacrifice for any future problems or should I trim them? Appreciate all the help.

I agree with the light bleaching. Looks like you might need some cal/mag too. I'd definitely leave the yellowed cola leaves on there. The bottom leaves that don't receive much light can be removed if you want, but I personally rarely remove any leaves. You might also consider moving your light even higher...maybe 10-12 inches for a 250-watt.

I moved the light up more, is there any real damage from bleaching?

you should check your Ph, what kind of nutes are you using it look like some light bleaching, but it also looks like nute burn too me

Yeah there is some nute burn I would think, something locking out nitrogen perhaps?

Jacks Classic Bloom @ 1tbsp/gallon, soil PH is ~6.5. Do I need to flush or can I just water with RO for the next couple times?

ur run off ph is 6.5 also when u changed to flowering did u leach out ur excess veg as this is often over looked and iam guessn no because of the the slow light flower this was not done just ph water 6.5 add 100%ur nutes and flush pots out 25%-runnoff till input/output match ph/ppm then double check ur n in ur flowering solution to make sure enough N for next time

She seems to be sucking up the water and my PH is dropping. I'm watering at ~6.3 and after a day the soil is at 5. Does she need more nutes or water?

Needs Dolomite or Pulverized Lime. 1 tbsp./Gallon of soil/soilless. Top dress it; Cultivate really well; Water. Maybe a good flush before you do all that.