Mix Photo/Auto Grow

I only fed twice this week d/t ppm too high, one plants pH was 4.2 again. Corrected with pH 6.8 for a few days. A few leaves turned yellow at the bottom of the plant in in the center of the photos at this time. Less new yellowing by end of week. Struggling with high temps again but brilliant husband figured out the problem and fixed it today. Temps in high 70s/low 80s now and the one humidifier has been keeping steady rh 45-70% (only once, very cold night). Stems are purple 😫. Trichomes on the autos are mostly cloudy and even a few amber on the leaves only, except the fruit punch, not ready for that yet, still so many long white hairs.