[BLunTeD4LifE]

hi,

i was wondering if anyone could tell me why the edges of the young leaves near the growing tips on most of my shoots are starting to curl downwards??

im growing under a 400w HPS light,,, all my other plants in the same cab are fine...

could it be underwatering that causes the leaves to curl under from the edges??

ive never had this problem before...

im growing in good quality potting soil mixed with perlite,,, its the mix ive used for years,,, i also use bio bizz nutrients,,, but the plants have only ever had to small dosages of grow ferts,,, because my soil has sufficient nutes in it already to see the plant thru...

this curling has just only started happening since i flipped the lights onto 12/12 a couple of days ago...

any suggestions would be gladly appreciated guys... ive hunted around, but i cant seem to find my answers...

thanks in advance...