What do I do know

Looks like your having a pH issue and then on top of that you’re having nutrient lock out. You should flush your medium and then re-amend with the correct pH water and then once that’s fixed then you can slowly add back the nutes.

your ph is off. flush the plant until your run off is at a 6.0. next let you plants dry out a bit, your in the starting phase of nutrient lock out. when you start to feed add cal mag , last make sure you have air flow in your tent, a fan blowing on the wall of the tent. it is import for the air in the tent to move around, last raise your light about 2 inches all this combined will help improve your grow conditions.

And they are curling up too