Help

could anybody help me with my problem, leaves are curling and plant looks as tho they are dying,this has happend in the last 12 hours, have got a pic but don't know how to attach to the thread HELP !!!

Well first off how old are your plants?
Wilting can be caused by many problems. A change in temperature, overwatering, under watering, Damaged plant. whats the situation?

was due to crop 3 weeks on sunday, way things are going they won't make it, have just given them water today, the leaves are curling under themselves, then start going a yellowy colour and dry up, i don't think i am over watering because i have followed the same thing i did last time, used the same soil as last time same nutrients, out of 10 only 4 are looking healthy, tempriture is farley constant min 68 f max 82 f humidity between 60-78, using 600w hps light, lower temp and humidity when the lights are off, of the 10, 8 are clones and the 4 good ones are clones, can post a pic but, i am about as literate with computers as i am with plants

Have you checked your ph? tds?

thanks picasso345, i can't belive i have done such a stupid thing.. ph was 6, i have add some ph up, at the moment i am just giving them water to flush them out, hopefully that will work

Good news. You seem to have everything else covered.