So i've been mowing a contract and its Bermuda grass. Well i guess 2 months ago i got the local co-op to come and spray and fertilize. And now its not that dark green but kinda lighter color. The customer wants it darker and so do i. . Also watering it 2 times daily. It takes about an hour and half mowing and trimming. But my question is can you ever fertilize and spray for weeds too much. And mowing about every 4 days at 4 inches.