looks like a low ph problem. do you have a solution to raise your ph? your ingoing water ph should be around 6.5 to 6.8 plus adding nutrients will lower your ph.
OaklandCA420 Reviewed by OaklandCA420 on . leaves turning yellow trouble shooting forum + pics What is your experience level? (first timer, novice, experienced...) first time Your Equipment: .1) Type and wattage of lights. CFL's 23 or 26 watt 8 of them .2) Distance from tops? about a inch and a half .3) Reflector type? bare bulb .4) Is there a consistent fresh air supply? yes .5) Do you have an exhaust fan and a circulation fan? yes .6) What are the bulb wattages, kelvin ratings, and schedule? watt 23 or 26, higher spectrum i think 5000k (can't remember and they're off atm), 16 Rating: 5