Went back and clicked up them photos.
Good pics!
Wish everyone would do that kind of resolution.
Never mind about the scooped, question.
No sign of Thrips.

And I do see the tell-tale signs of phosphorus lockout at the fan leaf centers.
Good call d00g!

The location of the symptoms tells you exactly when your PH was low.
If the old growth is normal, and the new growth looks good, it was transitory and mild.
You can simply carry on.

Looks like you've taken good care of her.
And now have learned to check the water's PH each and every time.
I learned, the hard way, that the PH of my tap water is a moving target.

(It's an Island thing.
Surf up? maybe PH guy no come work today. )

Aloha,
Weeze