Whats Happening? Can it be fixed?

I woke up yesterday to one of my babies looking like this...does anyone know what is happening and how to fix it?

Looks like too much Nitrogen. I'd do a flush. 3 gal ph correct water to each gallon of soil.

Dont take pics around your HPS.

thirsty ? to hot / not a great pic. QUICK TIP people. take a picture through a blue pair or sun glasses, it cleans up the hps, and looks noraml