going to need more detail and a few pics of them to help you out. have you been feeding? what are the temps in the grow space, what lighting are you using? what medium are you growing in?
How do you manage to use the internet, yet not know how to post pictures. Go to www.imageshack.us and host your pics there, then copy the link labeled 'hotlink for forums', paste it here and your done.
thats noy nutes or watering, thats mosaic. a devastating plant disease more common to the tobacco plant.i got it in my grow once and had to sterilize the whole room and trash the plants.if you smoke tobacco, dont handle your plants without gloves