@ashton_kusher Hi and welcome on GrowDiaries! Well, pH is regulating the way cannabis handle nutrients intakes. Having a wrong pH in your waterings will result in nutrients deficiencies, and/or nutrients lockout. You should never stick to a fixed pH but rather apply a pH range, by moving your pH a bit in each watering or each week. Considering you're growing in soil, you should apply a pH range between 6.0 and 7.0 but I've experienced better results sticking to a 6.0-6.5 pH range, especially during flowering stage. If you're planning to feed with foliar spray, then the pH should be above 7.0. Remember you need to calibrate your pH-pen when you buy it, and 1 to 3 times a month. Hope this helps, keep us up-to-date and happy growing! 👊