Stunted Growth - Are these auto's now duff?

Hey everyone!

I'm doing DWC and my pH tester was very out... like 0.9 pH out.

I gave my autoflowers a 3 week nute lockout. It should all be sorted now but they are small (2-4") and one of them is showing pre-flowers. From seed; this is day 50.

If they were yours would you pull them out and start again?

Thanks muchly x

Day 50? 2-4" tall? If they were mine, I'd definitely pull them and start again.

It looks like they're experiencing a turn-around with just 36 hours of water change, after a flush. I feel like I'm hours from starting again... I'm monitoring it very closely