I think you should be running your lights 18/6. Give them time to rest. And yes you absolutely need a fan blowing on your plant atleast for streanthing the stem n giving it oxygen. N honestly you only need like a 3:1 ratio of light spectrum. Get 3 simple 5000k 23w 120v cfl n then 1 2700k 23w 120v cfl. Keep them like 3 inchs ta 4 away n youll be suprized.