First time grow, suspected spider mites, looking for second opinion and solutions

[Vibesgirl]

Thank you! Will be testing the runoff from tonight's watering too.

 

[Vibesgirl]

H2o 6.2 going in, 6.1 runoff, don't think it's a nute lock, leaning towards phosphorus deficiency.

 

[Waira]

... checking for mites will require a reasonably strong magnifier to be sure,.. webbing won't really show well until the infestation is rampant! ...That said, the symptoms looks Ca and/or P defc. related to me,... both can have similar symptoms, and while Ca tends to show mid-to-uppers (it's an immobile nute within the plant), P defc. can manifest up higher when it's gotten bad, even though it's a mobile nute,.... pH is a bit low for true soil, but you're not in lockout yet,.. close though! Get higher pH inputs in there, like 6.5 or so,.... Ah, i see something else, you're using GO and you quite nutes already? Organics you don't need to do any so called flush period at all, plus organics are pretty mild, so the plant is basically starving and tapping into what stores it has for mobile nutes,... no Ca input though makes me think this is mainly Ca defc.,.... get on the bloom nutes and Ca-Mg until harvest unless you're within a few days of it,.. no time for the stuff to get broken down, absorbed and metabolized.....

 

[Vibesgirl]

Thank you, I started feeding again, I am about 3-4 weeks till harvest.
What I cant figure out though is that I have 4 plants outside on my deck. Needed to make room in the tent, moved before flower started. Same watering/feed schedule, so I had stopped using nutes on those too.
The girls on the deck show no signs of issues, all healthy leaves. The only issue I see is that the buds are not as developed, and tight as the girls in the tent. But no deficiency showing!