Do you supplement light in the winter or shade during the summer?
What's your latitude?
27 S , yeh I run leds into the evening, pushing the photoperiod to 14 hours, a little long, but I love being able to view the tank after a long day at work.
The tank gets a lot of ambient light and some direct, I've only recently set it up so time will tell but I don't see a need for shading as it's summer now.