Hi Guys,
Thanks for all of the feed back. Ok did a 20% water change yesterday. I have been doing them weekly. I have the coralife RO filter. Yesterday pH was 7.8/8.0(tought to tell), Ammonia 0, Nitrites 0, and Nitrates were at 20 ppt. That is why I did the water change. I have a refractometer and keep the salt at 1.020. I have been feeding them 2x a day. The white cheek tang eats about 4 square inches of algae a day, poops, then eats it again! The 2 clowns, 3 chromis, six line wrasse, cleaner wrasse, coral beauty, and scooter blenny get new life spectrum pellets for lunch and 3 ml of mysis soaked in vitamins and garlic for dinner. Every couple of days I will swith the pellets with a cube of mussels or prime reef. I know it sounds like alot, but they usually eat all of this food but they usually eat all of this with in 5 minutes. As for sleeping...the have made a 7" crater in the sand where they literally sleep, almost looking like they are dead. So they lie down at night. Only the girl swims vertically. When I walk over to the tank she rights herself and swims over. Also notice that the clear part on her side fins was worn away down to the black. Not sure why. Thanks again.