It can be over fert and/or over watering. The roots are saturated with something.
Fhydro
fhydro Reviewed by fhydro on . Advice Needed ! Downhill Slide !! This one has been in flower now for about 2 weeks. Everything seemed good until about a week ago, and all of the new growth started coming out yellow, with the tips dying off or burned?! Flower Chamber has 150w HPS mounted in cooling hood, on (12/12) never exceeding 90 deg. and avg temp at or near 85 deg. I have another clone also in this area, started as a clipping (flowering node only and is in super health ! Both are planted in Miracle Grow Potting Soil, fresh and new, which has time release Rating: 5