I can't see any trichs. Try adding one or two UVB cfl's (10.0). They're like 18 bucks at PetSmart and they should trigger more trichs on your plants. Just be careful b/c UVB lights make you go blind and cause skin cancer. Just be careful around it.
Also, put the plants into dark 24-36 hours just before harvest. By keeping them in darkness it can add more trichs.
Next round, I suggest pushing the nutes to maximum and using supplements.