they look like they are a) a little over-fed and b) a little under watered.

With fox farms and happy frog soils you shouldn't have to feed anything for 20 days. (I've heard 30, but my plants have said differently)

I'd water with cal-mag, then water a little more often. stick your index finger deep in the soil -- it should feel slightly damp when you water, not bone dry.

If you don't have cal-mag, sprinkle 1tsp of epsom salts (magnesium salt) on top of soild to leach into with each watering.