this happened fairly quick, it seems like overnight, leaves feel crispy, I was hoping new foilage would be o.k. but its happening with new foilage. What type of medium; soil or hydro? soil What brand and type of soil? fox farms ocean forest Indoors or outdoors?indoor What strain? white widow How old are the plants? 3.5 weeks What type of lights and how many watts? 400 watt MH How far from the lights? 18 inches What is your watering frequency and source of water? every 3 days, tap water that sit for 24 hours before use What, how much and when was it fed? NPK? didnt feed yet What is the medium/runoff pH and PPM if in hydro? 6.5 ph What are the temps and humidity in the room? temps are 73 f to 76f What size pots? 3 gal pot Any bugs? Look real close. none I can see Any other pertinent info?. can anyone tell what it could be?