I have a 3ft LED light box (having both white & blue LEDs) for my 4ftx1.5ftx2ft soft coral marine tank. I turn on the light twice a day. It is on from 6am to 9am and 5pm to 11pm. The reasoning of such schedule is because I view my tank during these two periods. I don't whether such schedule will have any side or bad effect on my corals and fishes. Currently, my corals and fishes are doing ok and I am fighting a high nitrate level (50ppm) problem in my tank.
Any advice from anyone? Thanks.