Mystery bag seeds

I’m pretty sure I’ve locked out the seedlings I’ve been getting spring water from Walmart and it’s been testing @ a perfect 6.5 every time. So I took it for granted and didn’t check the last couple of times. Noticed some light green almost yellow leaf. And slowed growth Checked the water and it tested high into the 8’s sooooo I treated the water I got lazy. Should always confirm PH. I also added them into some stronger medium Just before I noticed an issue. So hopefully in about a week they will bounce back. 🤷‍♂️ Of course Walmart wasn’t going to be consistent. Wtf was I thinking.