Yellowing leaves, brown tips and spots

I’m into week 6 of flower and I’m getting more yellowing leaves and some brown tips and spots. Lower leaves have been bending over for a few week. Temp are 85on/72off and Rh 45%.

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The burnt tips and clawing of the leaves indicate that you’ve been pushing the bloom nutes a little too hard, go water only for a couple waterings or you could do a bit of a flush at next watering.

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Overall things seem to be going ok, the bottom leaves curling under started a few weeks ago. I did just give it water last feeding and might do the same one more time or a flush.

Seeds:ILGM femenized white widow
Method: Soil 
Vessels: 5 gal fabric  pots
PH around 6.3
PPM/TDS or EC of nutrient solution if applicable
Indoor - 5 x 5 grow tent
Light system: farmer spider 4000
Temps; Day, Night
Humidity; Day = 84, Night = 72
Ventilation system; Yes, with 6" coil
Humidifier, De-humidifier set around 40
Co2; Yes, large bag

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I’ve added a few more pics showing the brown spots on leaves.

And here’s the feed chart I’ve been using.

At the end of week 8, leaves not looking so good, but thinking I still have at least a week left.

Any thought on how close I might be?

Here’s an overall view.