LIME green, can she be saved, and how so if??!

Ok so I have this one freebie that I started in happy frog perlite. She was doing great. however I ran out of good happy frog soil and only had some Lowes potting mix. She did an about face and now looks neon lime green compared to her healthy dark green sisters in happy frog. What caused this and can I remedy it and save her? Her diet has been very low nutrients (3ml micro, grow, and bloom on feeding days, and on plain watering days 1ml calmag, 1ml silica.

whats the soils ph?

I’m not sure. I guess I would check that by measuring runoff water? I have been very careful that all my feedings have been water Ph’d to 6.2.