Yup, looks like they were too hot. Give them some water....keep them at least 12 inches from your light and that will help them perk back up. (They'll need a little time to recover though.) I'm not an expert but I know heat stress when I see it and hopefully you caught it before it is too late. The fan is a must though! Those 400watters put out some heat plus you'll want your stem nice and phat so your gals can hold more bud. Also they absolutely love fresh air! I'll keep looking in on your girls in the future! Peace!