Help!! Plants dying!

Hi I need some help quick!! I'm havin trouble with my plants I've only got 4 growing as the others didn't sart growing. They aren't very big and already look like they're dying, tips of the leaves curling almost like they're burning. I've moved the light right up to the top of the tent all the vents are open I've got a fan in there. I'm using bio bizz soil and nutrients but just ordered coco soil and 7-9-5 formula. Waiting to be delivered. I've been doing lights 12hrs on 12off. But been turning them off earlier as it looks like they're burning. I've spent so much money on this so don't want them to die and have to start over. Can Anyone help? Will be much appreciated

pictures would be a great help... very hard to say whats happening going by just your post

PersonalJesus said:

pictures would be a great help... very hard to say whats happening going by just your post

Click to expand...

Yep, what he says...... I would take a blind shot in the dark though by just guessing that you've done one or all of 3 things
Overwatered them
Burned them with nutrients
Light burned them

Again, these are nothing more than guesses, without pics you cant get accurate assistance. ( Bet it turns out to be one of those 3 though)

yep guess would be over watering and or nute burn.