GEN 2: 8 Ball Kush - Send in the clones!

UPDATE: FOUND THE PROBLEM! My pH meter had become uncalibrated. Where I thought my buckets were at around 6 pH, they were actually around 6.8/6.9! Which is way too much for hydro and even more than I would want for soil. I flushed out the buckets and watered with nutes, got plant B down to 5.8 pH and plant A to 6.2 pH. Going to water every day with same nute setup at 5.9 and eventually they will balance out. Also going to keep the light blocker in place for a bit, I think they were also kinda like WTF because I went from desk lamp to ZOMGWTFBBQ with no adjustment. EDIT: (Pic added) Just raised the light a little bit, angled it slightly toward the back corner of the grow tent where the exhaust is located, placed the SCROG net that came with the tent, and put something on it to absorb some of the light. Probably cut the light that's reaching the plants, in half for now. Also going to blast the air conditioner and take it down to around 66F external temps, which should put the tent around 68/69, for a couple hours. Gave them a bit of a flush and then add nutes at a slightly lower concentration than before. Added CaliMagic this time, and added some spring water for Boron. Changed LST position on Clone B, which is recovering from the break pretty well. A couple days after moving into the tent, clone A's oldest fan leaves got all sickly. I removed one. Both plants have extreme purple stems now whereas under the desk lamp they were completely green. Pics above. I'd appreciate input please! I'm watering M,W,F and doing a flush on Friday. Maybe I need to water more or cut back on the light somehow? Maybe these leaves were nutrient burned already and the extra light hitting them is making them go all gnarly? 🤷