Leaf turning weird shape

Growing in coco/peat mix. Added additional cal mag to veg nutes. They were transplanted a week ago, so I haven’t given them the full watering where some of it drips from the bottom. PH 5.8 to 6.2 and ppm 700-800.

My guess is some of the coco/peat mix is dry on the bottom of the pot and they don’t like that. Guesses?

What I'd do is reduce ppms to 450-500 and add in some epsom salts. Water to runoff. And are those curled leaces more crisp then they should be? aside from the Mg thing...looks like humidity may be an issue. too dry? Do you trust your meter?
JD