very strange curling on baby...help?

View attachment 2368169 grown in happy frog soil under t3 light light g.h. nutes.. check the up curling on the edges. have not seen this before, didnt see any like it in the sick plant section. any thoughts?

Are you feeding fertilizer with the Happy Frog? What is your pH?

over-watered/over-fed

fed once 1/4 strenght, using g.h. nutes as i have for 17yrs. didnt show the lovely green sisters sitting next to it. this one has been light green since it popped, reason i added the light nutes. as far as over watering, cup was feather light when i watered everytime. p.h. is 6.0, no one here ever agrees on that so we'll pretend its suitable.

Nope ph too low and locking out some vital nutrients plus you plant looks like the soil was waterlogged or too dry

Is it a different strain from the others?

After checking runoff ,found ph very low. Water is tested before use, never been less than 6. How can it come out 4 from the bottom?