Thanks for input guys, and its not wind burn as i have no fans pointing directly at the plants, i have 3 8inch fans 2 point over canopy in different directions and one pointed at the wall of tent which bounces off and catches the back of the girls, at most the plants have the slightest rustle. And watering/feeding just as the coco drys up. As i say i have over looked all the basica and cant seem to figure out what the problem might be... stumped