Looking quickly over the just-cited 'article' (no, actually just a marketing blog Web page), I still see no real need for foliar pH adjustment (for our uses; they are concerned with factory farming field crops). This includes our/your not being concerned with insecticide stability (point no. 1). I presume your nutrients are water soluble, if not already fully dissolved in water, with reason or point no. 2 referring to need to pH down with nutrients with low solubility problems. Point 3 refers to "foliar absorption" best at lower pH and concludes, "it is clear that optimal pH levels vary according to each nutrient and its carrier," but you know nothing about optimal levels for your nutrients of interest. Point 4 refers to obviously not overdosing your plants with too high concentration.
I put more faith in Dutch Masters (a cannabis nutrients company). Their "Foliar Feeding" page (https://dutchmasternutrients.com/growers-guide/foliar-feeding/) has Q&A, "What’s the best pH for foliar spraying? 6.0 - 7.0 is a good pH range."
I still think with what you plan, the best single thing you could do is add a trace of non-toxic, castile-type, plant oil-based soap/detergent to assist foliar spread and intake. And then otherwise, you can play around and try to optimize timing, tent temperature, humidity and lighting.
I put more faith in Dutch Masters (a cannabis nutrients company). Their "Foliar Feeding" page (https://dutchmasternutrients.com/growers-guide/foliar-feeding/) has Q&A, "What’s the best pH for foliar spraying? 6.0 - 7.0 is a good pH range."
I still think with what you plan, the best single thing you could do is add a trace of non-toxic, castile-type, plant oil-based soap/detergent to assist foliar spread and intake. And then otherwise, you can play around and try to optimize timing, tent temperature, humidity and lighting.
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