Hey Teddy, from one soil container grower to another... It looks like N deficient and probably caused by nutrient lockup do to toxic soil. I would 'flush' the soil slowly with at least 3 gallons per plant and when the plants are ready for more water (about 1 to 2 days) I would give a normal 'flower' feeding. I always flush my soil every 2 weeks! This way there is no problem for the plants to absorb the nutes rapidly. Also, I would cut off the large fan leaves that are more than 50% yellow and rust!!! These leaves are just taking energy and water away from the healthy parts of the plant. My soil plants schedule: Day1 : nutes (1 gallon for 8 plants) Day2 : water, 1 gallon am and 1 gallon pm Day3 : water, 1 gallon am and 1 gallon pm Day4 : nutes again Day5 : water again Day6 : water again Day7 : nutes again Day8 : water Day9 : water Day10 : double nutes (still 1 gallon for 8 plants, but twice the strenght) Day11 : water Day12 : flush!!! When the soil is ready (1 or 2 days) nutes again and start over. I hope this helps! I know many here don't believe in flushing, but I swear by it! Don't let your soil become toxic!!!