Yellowing fan leaves appx 3 weeks into flower; normal or problematic?

So for the background info:
10 gal fabric pots in soil
1 plant in a combination of FFOF & FFHF
1 plant in FFHF with HF soil conditioner
SF1000 in a 3x3x6 tent
Temp 76~82 RH 56~48%
Ph water between 5.5-6.3 (I use a drip test kit so getting a precise ph level is difficult, but that’s the range I’ve been seeing based on my tests)
Feed schedule has been: (2 gal each plant) water, water, feed (feeding 1/4 tsp>gal of Open Sesame)-just completed a feeding of water right before posting this.
So my question is about the large yellowing fan leaves, is that normal for age or is it a sign of a problem starting?
I also noticed one or two leaves that look like they’re tacoing.
I last fed nutes 5/31, could they just be hungry?

Soil ph goal is 6.8. Not sure why you’re ph’ing so low. You can use plain tap water and your microbes will manage the ph for you. Microbes can lower it but they can’t raise it.

Wattzzup said:

Soil ph goal is 6.8. Not sure why you’re ph’ing so low. You can use plain tap water and your microbes will manage the ph for you. Microbes can lower it but they can’t raise it.

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That’s just a dumb newbie move. I’d been reading a bunch on here and elsewhere and thought the ideal ph range was something like 5.5-6.5. Something I’ll make sure to correct for next time.
My water comes out pretty alkaline, according to my test it’s close to the 8.0 range, I don’t have to do anything to adjust ph from that, just pour from the tap straight on them?

Correct. I use straight tap. It’s also 8 something. No issues.

it is normal to drop leaves in flower especially lower ones. But it could also be a sign it’s hungry if it’s too many of them.

Shit that’s gonna make my life so much easier lol. Fucking around with a drop or two at a time of ph down was a pain in my ass hahaha. Yeah I know it’s supposed to happen at some point, just wasn’t sure if mine were that age yet-switched to 12/12 May 11th, first pistils maybe a week later. I’ll keep an eye and see if it continues and may up my feed. Thank you for the feedback and info

Normal. If anything overfed a little. I’d give a little less N but otherwise looking good!