Please help!

I'm really hoping that we can revive our plants, any help is greatly appreciated. They are 4th week into bud and up until this point have been doing amazing. Dark green, growing fast and super bushy. Last Tuesday we flushed them with straight water, PH was checked and right on. Friday night we ran Blossom blood through them for the first time (our first time using this, we heard it was really good- is anyone familiar with this?). We checked on the plants last night at 10:30pm (Saturday), all were good and still a bit heavy so we planned on watering today or tomorrow. This morning we went in at 7:30am to close our veg room door so the light wouldn't disturb the ones flowering and they looked like this! All of them were extremely dry and crispy and the leaves curled up. In only 9 hours! Everything is on timers but it looks like one of our 2 large fans turned off so our guess is heat burn? It wouldn't have anything to do with the blossom blood would it? We watered this morning and most of the fan leaves are coming back, most plants are softening, but a few are still crispy. We misted them twice since watering. We have fans going and the door open to cool our grow rooms. Is there anything else we can do? Do we have a chance? Will it stunt the bud growth if they do make it? There's 38 all together with only 4-ish weeks left, we can't lose them! (Slightly panicking)

this is heart breaking i dont know how to help though, sounds like blossom blood was the perpetrator though?

How hot do you think it got?
It looks like dry, heat stress to me.
Be patient, give 'em a chance.
Nice grow though, especially if first timer.

Thank you, I really hope so! We are kind of new, but have already had 2 unimpressive yields, these ones were doing SO much better after correcting quite a bit of our initial mistakes. They still look rough this morning and the ones the were softening up last night are back to dry and crunchy this morning. I've read about revive, does anyone think it will help? Or should we just wait and see what happens. My guess is it got pretty hot in there. We have 4-1000w going and 2 big fans but only one would have been working. I'm just shocked my how fast this happened.

depend on the temps if one fan was still work it would have to be in the 100 or so mark to cause that in the room because the lower braches are druppy to, i would flush with water and stop using the blossum blood if it was not that hot in there

Blossom blood is done! I had two guys at the hydroponics store we go to recommend it argh. I ran revive through them last night and also used it as a foliage spray. There are a few plants that look fantastic and a lot that look awful. I have been trying to do as much research as I can to see if they can be saved and I'm not really getting any answers. Some say give them a week and they'll be good, just harvest a week or 2 later than schedule, some say they won't make it. A lot have really crunchy leaves on the top that break if you touch them, on those plants the buds seem crunchy, but the lower leaves are looking a lot better and are fanned out again. Is there a point to keep going with these? Or once they're crunchy will the buds still grow? According to our schedule, they have another 4-5 weeks left.

I still am not sure if I'm reading right, but I am getting that you had lights ON and fans quit when this happened?
I still stay with my first post, heat stress.
The top just got cooked.
If the top gets brown and dies off, it will either be really easy to pluck the leafs off, or they will fall off, but I wouldn't say toss the plant.
Just fix whatever problem you had with the fans, check your distance from lights to plant, and continue on.

Yup, lights on, one of the fans quit. I'm guessing there's hot spots that fried the majority of them because there's some that look great (about 8 out of 38...ouch). Bakatare, you have given me hope!