I have checked the diagonostic threads and it could be low on nitrogen or magnesium, i boosted those and this morning they are still getting worse. Anyone have any clues what may be wrong with my plants? I got 35 or them coming from seeds and only a few are having the problems. I use a Ph of 6.2, 300 ppm, proper temperature with an intake fan for clean air, exhaust for dirty. Nutrients I use are : Advanced Nutrients : Grow , Advanced Nutrients : Bloom and Advanced Nutrients Micro, a 3 part program. Thanks in advanced