Two questions.....what kind of water are you using? If it's RO or distilled you need CalMag Plus.

When was the last time you thoroughly flushed your system?

Ok...I LIED .....question three....are you using a zyme product for you roots?
Weedhound Reviewed by Weedhound on . Confirm Yellow Leaf Diagnosis. (PICS) Hey everyone. I've got 5 White Rhinos Ebb & Flow in pH'd Hydroton 5.8 pH (consistantly) 1400ish ppm 18 Days Flowering 400w HPS Rating: 5