My guess would come down to the transplant. Maybe a bit of stress and she hasn’t been able to hit new soil yet? Either way I’d keep doing what you’re doing making sure ph doesn’t drop or rise - calibrate your device to be sure.
Ever tried azos for transplant watering? Helps reduce shock I throw some Mycorrhizae in at same time
You are right bro. That’s exactly what it is. I’m SO happy about that. I had sprayed some water to increase humidity one really hot night and I’m thinking some water drops got burnt on the last plant of mine. Thanks so much. You are a true expert to catch that. I couldn’t figure it out until you said that. Bravo!!