Yellowing leaves: Heat, nitrogen, something else?

First post, and second attempt at an indoor closet grow op. My first attempt had overwatering I think, so I have been cautious about watering and nutrients. The plants started great, but then a few started to get yellow tips. Now several leaves are yellow, and new leaves are yellowing quickly. Not sure what to do! They have been growing for about 3-4 weeks.

  • What strain, Seed bank, or bag seed

True North Seed Bank, AUTO AK74 FEM

  • Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF

Organic Soil -

Kellogg Garden Organics - Premium Outdoor Potting Mix

  • Vessels: Pots, Grow beds, Buckets, Troths

VIPARSPECTRA 5-gallon grow bag

https://www.amazon.com/gp/product/B07Q5YPRX2/

  • PH of Water, Solution, runoff (if Applicable)

Soil PH is sitting around 7.5, I just ordered some PH down.

  • PPM/TDS or EC of nutrient solution if applicable

MG Performance Organics all purpose food. I haven’t used any of this since planting, and just watered with filtered water. I killed my last plant with over-watering I think, so I have been worried about that

  • Indoor or Outdoor

Indoor

  • Light system
    FSGTEK 600 Watter LED Grow light. I have had both Veg and Bloom lights on

https://www.amazon.com/gp/product/B07TQ55VYN/

  • Temps; Day, Night

Day: 27-29C
Night: 24-25C

  • Humidity; Day, Night
    40% - 55%. I just ordered a humidifier.

  • Ventilation system; Yes, No, Size

Yes Vivosun carbon filter with a hanging setup. I have a 4 Inch booster duct vent to pull air through the fan:

https://www.amazon.com/gp/product/B01DXYMBU6
https://www.amazon.com/gp/product/B00CQBFOTS

  • AC, Humidifier, De-humidifier,

Just ordered a humdifier. I have one oscillating fan blowing on the plant.

  • Co2; Yes, No

Yes, carbon filtered.

It’s starting from the older leaves and moving up which indicates a mobile nutrient. It looks like lack of N to me. The high soil ph could be your problem. Try fixing that first by lowering you input water to around 6.2 for a few waterings then measure again. You can also top dress with a very small amount of worm castings mixed around a little then watered in.