O.G. Kush leaf issue

Hi first post here couldn't get anywhere on other forum. I have an OG Kush into flowering week 5. Buds all look good, stems all look green and healthy, but the leaves all turned yellow within the past few days and there's also brown spots, red leaf stems and some leafs curling up, not the tips but the whole leaf, and not in a need water way haha. Leaves are also dropping off as they yellow.

What could be causing this?

I'll explain everything please read and help if you can.

I've fed miracle grow 2 or 3 times during veg, 12-4-8. I vegged for 4 weeks and haven't fed miracle grow since the switch. I've fed only koolbloom 2 maybe 3 times. I do one nutes then 3 waters.

That's what I've been using, I also have calimagic there and a schults plant food at 10-15-10.

She's in a good store bought compost with some miracle grow potting soil mixed in and some extra perlite added. No bugs in sight and I have yellow stickys around.

She's under CFL's and LED's, and i don't overwater I let her dry out. Also I use tap water but I let it sit out for a long time. PH is spot on.

She's due for a Koolbloom feed on her next watering. My plan was to feed a little koolboom and a little calmag at once next time. But I don't know, the leaves are all yellow at week 5 in flowering, maybe she needs nitrogen too.

Can someone with more knowledge point me in the right direction? Thanks a lot.

Will upload pics as soon as I can tonight

Some pics

Definitely looks like some sort of deficiency, maybe mag? Or possibly N would try to feed it some nitrogen for sure

Hey thanks man! If I knew how to up vote I would haha.

I'll try a miracle grow and calimagic feed now when she dries out, I'll keep you guys posted.

So you think she's ok on the bloom Nutes for this time?

I'd say she is, nitrogen usually starts with yellowing the tips but honestly not too sure

Ok cool thanks again man much appreciated