The morning after every feed with auroras flowering schedule ( which I’m using half dose of recommended amount ) the lower fan leaves are turning yellow. I’m wondering if this is a magnesium deficiency? I’m also using RO water
Brother your plant is looking healthy! Don't worry about it... in case you are not using a ppm pen to measure your water ppm and make sure you are on the right levels for your plant stage. You can also download feeding schedules with the recommended ppm levels. I hope this helps
Your plant sure looks nice. I've seen and read about many plants as they go into flowering and harvest that slowly the leaves will naturally yellow off and somewhat die. I don't know if this is your cause or if there's a higher nitrogen content than needed at this stage. But since you're playin it safe and doing light doses, it may not be nutes at all.