Help! What's wrong with my plants?

Lets see the whole plants. The first leaf looks like nutrient burn from too much fertilizer, but the second... Not sure yet.

Thats usually a ph issue. Do you adjust your ph to 6.0 (5.8-6.5) for soil and 5.2 (5.0-5.for hydro?

plants too close to lights?

Looks like her feet are too wet.. how often are you feeding/watering?

Also could be nute burn. How old is she? What kind of nutes? How much?

I've had similar problems and I agree, probably too damp.