Daniella, I have been reducing my MH lights only 2 hours a day. I used to let them run 12 hours, but now 10 hours. I am going to go back slowly to normal lighting starting next week. If you think your corals are doing better with more lights, I think you can do just like me, just slowly get back to normal.
My tank is a BB tank, I think when something goes wrong it is easier to deal with. Maybe I am wrong but that's what I thought. I can siphon the bottom of the tank many times a day if I want to, without worrying disturbing the sand bed. Water change is also easy for me too.
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